Protozoan With Diatoms. IIC, 500X. Amazing High Definition Microscopy Video! 1080P! Craig Smith 2026-09-19 | Protozoan With Diatoms. IIC, 500X. Amazing High Definition Microscopy Video! 1080P!
Rotifera. 325x. DIC. Craig Smith 2014-03-05 | The rotifers (Rotifera, commonly called wheel animals) make up a phylum of microscopic and near-microscopic pseudocoelomate animals. They were first described by Rev. John Harris in 1696, and other forms were described by Anton van Leeuwenhoek in 1703. Most rotifers are around 0.1�0.5 mm long (although their size can range from 50 �m to over 2 millimeters), and are common in freshwater environments throughout the world with a few saltwater species; for example, those of genus Synchaeta. Some rotifers are free swimming and truly planktonic, others move by inchworming along a substrate, and some are sessile, living inside tubes or gelatinous holdfasts that are attached to a substrate. About 25 species are colonial (e.g., Sinantherina semibullata), either sessile or planktonic. Rotifers are an important part of the freshwater zooplankton, being a major foodsource and with many species also contributing to the decomposition of soil organic matter. Most species of the rotifers are cosmopolitan, but there are also some endemic species, like Cephalodella vittata to Lake Baikal. Recent barcoding evidence, however, suggests that some 'cosmopolitan' species, such as Brachionus plicatilis, B. calyciflorus, Lecane bulla, among others, are actually species complexes. (Wiki)
Paramecium aurelia in the final stage of cell division. 400x, DIC. Craig Smith 2014-03-03 | Most paramecia undergo cell division, binary fission, dividing the cell into two new cells that rapidly grow and develop into the new organisms. This process can happen up to three times a day if the conditions are right.While paramicia usually reproduce asexually, when food supplies are low, they may reproduce through a form of conjugation, the transfer of genetic material through cell-to-cell contact. Two paramecia fuse together, including the nuclei within each cell, after which they divide into four separate parts. In this division process, the organisms undergoes meiosis, and the diploid micronucleus divides twice, resulting in four haploid micronclei. This combination of two different genetic individuals and mixing of chromosomes is the basis of sexual reproduction. Progeny from conjugation must reproduce asexually 50 times before they are able to perform conjugation, after which their biological clocks are restarted, allowing for conjugation. Death follows after about 100 generations, because of protein degradation around the gullet, which prevents them from finding a mate.
Paramecium bursaria. 40x-600x. Darkfield, ploarized light. Craig Smith 2013-10-21 | Paramecium bursaria is a species of ciliate protozoan that has a mutualistic symbiotic relationship with green algae called Zoochlorella. The algae live inside the Paramecium in its cytoplasm and provide it with food, while the Paramecium provides the algae with movement and protection. P. bursaria is 80-150 μm long, with a wide oral groove, two contractile vacuoles, and a single micronucleus as well as a single macronucleus. P. bursaria is the only species of Paramecium that forms symbiotic relationships with algae, and it is often used in biology classrooms both as an example of a protozoan and also as an example of symbiosis. (Wiki)
The Amazing Water Bear! Ancient Alien? Craig Smith 2013-10-02 | It is surely the stuff of science fiction: An extraordinary being arrives on Earth that can withstand a tortuous array of conditions: boiling, freezing, tremendous atmospheric pressure, near total dehydration, and exposure to massive amounts of ionizing radiation. While many joke that "cockroaches would be the only thing to survive an extreme global nuclear war", in fact, cockroaches would not. These creatures would. They are also the only life form known to be able to survive the near vacuum of space for extended periods. (Note: humans can actually survive the near vacuum of space for about 90 seconds without long term damage, but we have nothing on this creature.) They can lie dormant for 10-100 years and then come back to life with a drop of water. When it comes to durability, nothing on Earth can match the very real "Water Bear"- a tiny creature the size of a grain of sand (averaging about a millimeter long) that is lauded as the toughest creature on planet Earth.There are over 1000 known species of Water Bears (called such because when they walk, their gait loosely resembles plump little bears ambling along on eight legs). Also known as "tardigrades" (from the Latin "tardigradus" meaning 'slow walker'), they thrive in the most extreme environments on every corner of the Earth- from the Equator to the Polar regions- forests, swamps, deserts, tundras, mountains, glaciers, hot springs- from the highest point on Earth along the Himalayan mountain range, to the deepest parts of the sea, tardigrades are there. Less excitingly, they can also be found in your backyard where you can usually find them in common moss, lichens and ferns, feeding on natural detritus in the undergrowth.Although the scientific community has long known about tardigrades (since 1773), it is still somewhat of a mystery how they manage the amazing feat of cryptobiosis, that is, the ability to almost completely halt their metabolic processes, losing up to 97%-99% of their total moisture. When they then encounter water again, they reanimate, with the current record being 120 years to reanimation (though that particular creature simply moved a little and then died when reanimated. But when we go to spans such as 10 years, most tardigrades are able to fully reanimate with no problem.)One of the keys to this hardy creature's success seems to be the presence of a cellular sugar called trehalose which preserves the membranes that form their bodies. Although hardly the answer to human suspended animation, scientists are looking at trehalose as a viable way to preserve human eggs during freezing for later fertilization.In any event, when tardigrades dry up, they become "tuns", little capsules that are easily transported and dispersed over the Earth via the wind, the oceans, or in an animal's gut. (Yes, they can sometimes survive there too.) Besides their dehydration abilities, these little creatures can also go without oxygen for a time and withstand temperatures ranging from well above water's boiling point to nearly absolute zero. (They've been shown to be able to survive as low as 1 degree above absolute zero for several minutes.)Not remarkable enough for you? Tardigrades can also survive as high as 5,000 grays or 500,000 rads of ionizing radiation, though above 100,000 rads does seem to make them sterile. For reference, humans die around a "mere" 1,000-2,000 rads and will suffer significant damage with much less.In order to test some of the tardigrade's amazing abilities, in 2007, the European Space Agency launched the FOTON-M3 spacecraft hurtling a capsule full of science experiments into the heavens. Its subjects included live tardigrades, who returned from space after orbiting Earth for 12 days, all the while being subjected to the near vacuum of space and the full spectra of deadly solar and cosmic radiation. How did the Water Bears hold up? No problem for a large percentage of them. About 68% of them were just fine and kept on amblin' once back on Earth. For reference, besides surviving the near vacuum of space, some species of tardigrade can also withstand up to 6,000 times atmospheric pressure at sea level. This is about 6 times more pressure than at the deepest point in the ocean. I, for one, welcome our new tardigrade overlords.From www.todayifoundout.com.
The Incredible Microscopic Annelid Worm, Aeolosoma. Darkfield, DIC Lighting. 125x-800x. Craig Smith 2013-09-21 | These transparent microannelids inhabit soils and decaying material in stagnant water, using cilia to move about. Like other annelids, Aeolosoma has a segmented body (roundworms and flatworms aren't segmented), generally consisting of about 17 segments. All but the first segment, after the head, bear sets of bristle-like structures called setae or chaetae.The mouth is fringed with constantly moving cilia that create a vacuum cleaner effect, whisking up microscopic plants and organisms. The worms range in size from 1-2 millimeters, but often occur in long chains of immature worms, called zooids, up to 10 millimeters. These chains are produced by asexual budding, the means by which Aeolosoma reproduces.These aquatic worms belong to the family Aeolosomatidae, which was recently put in its own class, Aphanoneura, along with the class Potamodrilidae. Some biologists, however, still classify this tiny worm in the class Oligochaeta, the same class to which the common earthworm belongs.Currently, more than 830 species of annelids representing 27 families,12 orders, and five classes (Oligochaeta, Aphanoneura, Branchiobdellae, Acanthobdellae, and Hirudinea) are recognized as occurring in the U.S. and Canada; these include both native and introduced species.From MicroscopyU.com
There Will Be Blood! White Blood Cell Activity. 800-1000X, Darkfield. Craig Smith 2013-07-02 | There Will Be Blood! White Blood Cell Activity. 800-1000X, Darkfield.
A Life and Death Drama Plays Out...(with low power clip for size reference) Craig Smith 2013-06-11 | Seen here is an extreme close-up of the internal structure of two large protozoa with smaller protists swimming between them. At 0:58, the camera pans up and another small protist is seen swimming inside of the larger organism. At 1:50, this smaller protists swims through and ruptures the cell membrane of the larger protist. Immediately, the larger protists suffers a catastrophic breakdown of it's internal structure and the cell membrane is breached spilling it's contents into the surrounding water. This results in the death of the larger protist. The smaller protozoan is not an offspring of the larger one but rather appears to have entered the organism either by being ingested or by crossing the cell membrane without rupturing it. Lighting is a combination of three microscopy techniques; phase contrast, darkfield lighting and polarization lighting. Magnification is 625X and the camera is the Nikon D4.
Ciliated Protozoa Heals From Catastrophic Cell Membrane Failure! Darkfield Phase Contrast Combo Craig Smith 2013-06-08 | This single-celled protozoan was imaged using a Zeiss Universal microscope fitted with a Nikon D4 camera set to 30 fps @ 1080p resolution. The cell membrane of the organism ruptures at about 0:40 but then appears to repair the damaged membrane and continue on, unaffected. The objective was a 40x Zeiss Ph3 .8-1.0/na oil immersion planapo with iris. The photo-eyepiece was a Zeiss 12.5x wide field. The Universal's Optovar magnification changer was set to 1.25x (40 x 12.5 x 1.25 = 625x) The iris was stopped down to .8/na and the scope was setup for phase contrast viewing. I've had many requests to explain what I mean when I refer to "darkfield-phase contrast lighting". With the objective iris of the 40x Zeiss Ph3 .8-1.0/na oel planapo with iris stopped down to .8/na and the scope aligned for phase contrast lighting the central dark area of the phase annuli in the condenser effectively functions as a darkfield stop and results in the black background while the alignment of the phase rings in the objective and condenser rings results in increased contrast common to traditional phase contrast lighting.
Four Heads Are Better Than One! A Quad-nucleated Protozoan During Cell Division. Craig Smith 2013-05-27 | Most cells have one nucleus which functions as the control center of the cell. However, there are exceptions. This single-cell protozoan is normally equipped with two nuclei. Seen here magnified 625X during cell division, it has a temporary compliment of four nuclei until it splits giving each of the offspring a compliment of two.
Paramecium bursaria, P. caudatum, Oxytricia. 400-1000X, DIC. Craig Smith 2013-05-20 | Paramecium bursaria, P. caudatum, Oxytricia. 400-1000X, DIC.
Various protists including Stentor from a coastal stream. DIC, 325X. Craig Smith 2013-04-29 | This film shows a variety of protists (and a Rotifer) I imaged on a recent trip to the coast. I gathered the sample from a small creek several meters upstream from it's mergence with the ocean.
Water Bear (Tardigrade) in darkfield and polarized light. 100-350X Craig Smith 2013-04-21 | Tardigrades (commonly known as waterbears or moss piglets) are small, water-dwelling, segmented animals with eight legs. Tardigrades are notable for being one of the most complex of all known polyextremophiles. (An extremophile is an organism that can thrive in a physically or geochemically extreme condition that would be detrimental to most life on Earth) For example, Tardigrades can withstand temperatures from just above absolute zero to well above the boiling point of water, as well as pressures greater than any found in the deepest ocean trenches, along with solar radiation, gamma radiation, ionic radiation— at doses hundreds of times higher than would kill a person and have lived through the vacuum of outer space. They can go without food or water for nearly 120 years, drying out to the point where they are 3% or less water, only to rehydrate, forage, and reproduce. Usually, tardigrades are 1 millimetre (0.039 in) long when they are fully grown. They are short and plump with 4 pairs of legs, each with 4-8 claws also known as "disks." The animals are prevalent in moss and lichen and, when collected, may be viewed under a very low-power microscope, making them accessible to the student or amateur scientist as well as the professional. Tardigrades form the phylum Tardigrada, part of the superphylum Ecdysozoa. It is an ancient group, with fossils dating from 530 million years ago, in the Cambrian period. The first tardigrades were discovered by Johann August Ephraim Goeze in 1773. Since 1778, over 500 new tardigrade species have been found. (Wiki)
Euglena viridis caught in the vortex of a spinning Paramecium aurelia. 325-1500X. DIC Craig Smith 2013-04-16 | Euglena viridis caught in the vortex of a spinning Paramecium aurelia. 325-1500X. DIC
My microscopic footage used in the new Anand Gandhi film, The Ship of Theseus. Craig Smith 2013-04-14 | My microscopic footage used in the new Anand Gandhi film, "The Ship of Theseus".
Ciliated Protozoa; Internal Detail. 1500-2500X Craig Smith 2013-04-08 | Ciliated Protozoa; Internal Detail. 1500-2500XDIC
Paramecium aurelia, 400X. DIC Craig Smith 2013-02-07 | Looking through a microscope is very often a one-dimentional, low resolution, fuzzy experience. However, when all the elements of a properly done microscopy session come together as regards the lighting, optics, subject matter, composition and specimen thickness, a viewing experience of exceptional clarity and contrast can be acheived. Here, the lighting ratios emulated by Differential Interference Contrast approximate those of a multiple-light macro setup. The viewing experience under these conditions is as if a 3 or 4 light studio setup was being used to illuminate fish in an aquarium. When these criteria are achieved, the experience of viewing the very minute through a microscope is suspended and the micro-organisms take on a three-dimensional quality and allow he viewer to experience the life forms as if they were huge creatures swimming by in a gigantic aquarium.
How a Paramecium Eats! Craig Smith 2013-02-07 | This video shows how Paramecium eat. Paramecium is a genus of unicellular ciliate protozoa, commonly studied as a representative of the ciliate group. Its shape resembles that of a grain of rice. The cell ranges from about 50 to 350 �m in length (more or less one tenth of a millimetre) and is covered with simple cilia, allowing the cell to move at speeds of approximately 12 body lengths per second. The cilia act like oars and move in one direction.There is a deep oral groove containing inconspicuous tongue-like compound oral cilia (as found in other peniculids) used to draw food inside. In general, they feed on bacteria and other small cells, making them heterotrophs. Osmoregulation is carried out by a pair of contractile vacuoles, which actively expel water from the cell absorbed by osmosis from its surroundings.[1] They are relatively large protists and can easily be seen with a medium-power microscope.Paramecia are widespread in freshwater environments, and are especially common in scums. Recently, some new species of Paramecium have been discovered in the oceans.Certain single-cell eukaryotes such as Paramecium are examples for exceptions to the universality of the genetic code: in their translation systems a few codons differ from the standard ones.
Birefringence in Paramecium caudatum. Darkfield and polarized Light. 225-900X Craig Smith 2013-01-29 | This video shows the common single-celled organisms, Paramecium caudatum and P. aurelia and their different birefringence under polarized light. Birefringence is the optical property of a material having a refractive index that depends on the polarization and propagation direction of light. These optically anisotropic materials are said to be birefringent. The birefringence is often quantified by the maximum difference in refractive index within the material. Birefringence is also often used as a synonym for double refraction, the decomposition of a ray of light into two rays when it passes through a birefringent material. This effect was first described by the Danish scientist Rasmus Bartholin in 1669, who saw it in calcite. Crystals with anisotropic crystal structures are often birefringent, as well as plastics under mechanical stress.
Love in the Afternoon! Conjugation in Ciliated Protozoa! Extreme HD! Craig Smith 2013-01-11 | Conjugation is a process whereby two cells come in contact and exchange genetic material. In prokaryotes the transfer is a one-way process involving the union of two bacterial cells, during which chromosomal material is transferred from the donor to the recipient cell. Conjugation in Protozoa, as shown here, is a two-way process, genetic material is passed between each conjugant.
Wave Swept Cilia Undulating Wildly in the Hidden World! Craig Smith 2013-01-11 | Wave Swept Cilia Undulating Wildly in the Hidden World!1500XDIC
Whale Watching. 1250x. DIC Lighting Craig Smith 2013-01-10 | Like ships at sea, bacteria move franticly at the surface while below linger some truely gargantuan creatures, relatively speaking.
Various Ciliated Protozoa. Kingdom Protista. DIC Lighting Technique. Craig Smith 2013-01-08 | Various Ciliated Protozoa. Kingdom Ptotista. DIC Lighting Technique.
Extreme Detail in Binucleated Oxytriche Ciliated Protozoan Craig Smith 2012-12-31 | Extreme Detail in Unidentified Binucleated Ciliated Protozoan
External Vacuole Formation in Paramecium aurelia. 250-1000X. DIC Lighting Craig Smith 2012-11-09 | When Paramecia are subjected to environmental stress, as when the water begins to evaporate under the coverslip, they can often be seen creating a "vacuole" that starts as a "leak" or rupture in the cell membrane. As the internal fluid flows out of the rupture, a protrudence is formed containing thousands of small moving particles. This particle movement may be the result of Brownian Motion or may be bacteria residing within the organism. Finally after 1 to 10 minutes, the vacuole detaches and floats away, usually just moments before the Paramecium dies.
Paramecium Aurelia. Polarized light, phase contrast, darkfeild combination. 625x Craig Smith 2012-09-28 | Paramecium aurelia are unicellular organisms belonging to the genus Paramecium of the phylum Ciliophora. They are covered in cilia which help in movement and feeding. Paramecium can reproduce sexually, asexually, or by the process of endomixis. Paramecium aurelia demonstrate a strong �sex reaction� whereby groups of individuals will cluster together, and emerge in conjugant pairs. This pairing can last up to 12 hours, during which the micronucleus of each organism will be exchanged. In Paramecium aurelia, a cryptic species complex was discovered by observation. Since then, some have tried to decode this complex using genetic data.
Microscopic worm. Internal detail. 300X. Darkfield Craig Smith 2012-09-20 | Microscopic worm. Internal detail. 300X. Darkfield
Spirostomum; Amazing Microscopic Creature! HD 1080p! Craig Smith 2012-09-18 | Spirostomum is a genus of free-living ciliate protists, belonging to the class Heterotrichea. Species of Spirostomum are found in both salt and fresh water. All are elongated, flexible and highly contractile. Although unicellular, members of some species can grow as long as 4 mm (0.16 in). The body of the cell is long and worm-like. In cross section it is mainly cylindrical, but may be flattened at the tail end. The posterior excretory vacuole is large, and may fill the whole "tail." Cilia on the cell body are short and arranged in longitudinal rows. The length of the peristome varies between species, from about 1/4 to as much as two 2/3 the length of the cell. The peristome is fringed with membranelles, which are used to channel particles of food into the creature's oral cavity. The macronucleus may be moniliform (like a string of beads) or compact and oval, depending on the species. Spirostomum reproduces by binary fission. Reproduction may be purely asexual, or it may follow conjugation, during which compatible mating individuals come together and transfer genetic material across a cytoplasmic link. Members of the genus are extremely contractile. When startled, Spirostomum ambiguum can contract to less than half its extended length within 1/200 of a second (a contraction speed similar to that of the ciliate Vorticella). As it contracts, the cortex of the cell twists and widens, and its spiral structure becomes visible. The mechanism of Spirostomum's contractility was first studied by Ernst Haeckel in 1873 and has continued to attract scholarly attention. Certain species have proven to be sensitive to the presence of heavy metals, and have been used by ecologists as indicators of water purity.
1. Ciliated Protozoa, Aeolosoma. DIC, Darkfield Craig Smith 2012-09-08 | 1. Ciliated Protozoa Oxytricha with diatom shown next to Paramecium aurelia with contractile vacuole; 1350X. DIC.2. Paramecium aurelia showing coordination of cilia, nucleus, organelles, contractile vacuole; 1350X. DIC.3. Oligochaete worm Aeolosoma, showing paristalsis and blood flow; 125-250X. Darkfield.
Just Passin Through Paramecium squeezing by each other 4 30 12 Craig Smith 2012-09-05 | Just Passin Through_Paramecium squeezing by each other_4-30-12
Paramecium aurelia, Oxytricha; 300-1200X. Differential Interference Contrast Craig Smith 2012-09-03 | Paramecium Caudatum, Oxytriche; 300-1200X. Differential Interference Contrast
Volvox Globator @ 30x. Darkfield Illumination Craig Smith 2012-07-04 | Volvox Globator @ 30x. Darkfield Illumination
OXYTRICHA IN DIC EXTREME DETAIL_25 ZEISS PLANAPO, 50 LEITZ NPL FLUOTAR_4-25-12 Craig Smith 2012-07-02 | Species of this hypotrich ciliate are 40 to 260 microns long and are flexible. The genus is elongated, ovoid and dorso-ventrally flattened, with a flat ventral surface and arched dorsal surface. The oral cavity expands from the cytostome anteriorly. A pronounced adoral zone of membranelles extends from the cytostome along the left side of the cell and across the anterior end of the cell. The genus is very similar to Cyrtohymena and Notohymena. Two undulating membranes (one paroral and one endoral membrane) follwing a slightly curving path along the right side of the oral depression; in ventrally viewed silver stained cells the kineties of these two membranes usually cross. There are two marginal rows of somatic cirri which are not continuous at the posterior. The genus exhibits the typical oxytrichid ventral cirri pattern (8 frontal, 5 ventral and 4 or more transverse cirri). Usually, three caudal cirri extend from the posterior end. Typically two macronuclei are located in the central of the cell.
Tragic Ending! Not For The Squeamish! Craig Smith 2012-06-05 | Photographed using the amazing new Nikon D4, this protozoan is moving through a sea of microscopic debris when it is sucked by osmotic forces through a small channel and shredded into a million pieces. Amazingly, the core of the organism, which consists mainly of the harder mouth parts, emerge still moving as if nothing had happenedt!
Green Algae Closterium Detail. 200-500X. IIC Lighting Craig Smith 2012-05-29 | Closterium cells are crescent-shaped or elongate and lack spines. Some are quite straight and needle-like, while others are much broader with curved ends. The ends of the cell are usually tapered and may be pointed or rounded. Each semicell has a single axial, ridged chloroplast with at least one pyrenoid. Occasionally there are two chloroplasts per semicell. The nucleus is located in the center of the cell between the chloroplasts. Terminal vacuoles at the cell tips hold vibrating crystals of barium or calcium sulfate, the function of which are unknown. Brownian motion causes these microscopic particles to move erratically due to the impacts of collisions with the surrounding liquid molecules in which they are suspended.
Sex in the Unseen World! HD Microscopic Image of Paramecium in Conjugation. IIC Lighting. 312X Craig Smith 2012-05-14 | Conjugation in P. Caudatum; Extreme Detail! Insight Interference Contrast. 312X
The Zeiss Universal Research Microscope. Craig Smith 2012-04-27 | I've had many inquiries about the microscope I'm using. So here it is; my old built-like-a-tank Zeiss Universal.
The Varied and Incredible Activity of Microscopic Life! HD 1080P! Craig Smith 2012-04-26 | The Varied and Incredible Activity of Microscopic Life! HD 1080P!
A Microscopic Tour of My Back Yard. Amazing 1080P HD Video Through the Microscope! Craig Smith 2012-04-25 | A Microscopic Tour of My Back Yard. Amazing 1080PHD Video Through the Microscope!
Paramecium Caudatum; Gross Anatomy and Contractile Vacuole Detail. 300X-1250X Craig Smith 2012-04-24 | Paramecium Gross Anatomy and Contractile Vacuole Detail; 300X-1250X. ICE lighting (Insight Contrast Enhancement). The contractile vacuole (abbrev; CV) pumps excess water out of the cell. In freshwater environments the concentration of solutes inside the cell is higher than outside the cell (i.e., the environment is hypotonic or hypoosmotic). Under these conditions water flows from the environment into the cell by osmosis. The CV serves as a protective mechanism that prevents the cell from absorbing too much water and possibly exploding. The contractile vacuole should not be confused with the vacuole, a different organelle much more common than the CV. The CV, as its name suggests, expels water out of the cell by contracting. The growth (water gathering) and contraction (water expulsion) of the CV are periodical. One cycle takes several seconds, depending on the species and the environment's osmolarity. The stage in which water flows into the CV is called diastole. The contraction of the CV and the expulsion of water out of the cell is called systole. Water always flows first from outside the cell into the cytoplasm, and only then from the cytoplasm into the CV. Species that possess a CV always use it, even at very hypertonic (high concentration of solutes) environments, since the cell tends to adjust its cytoplasm to become even more hyperosmotic than the environment. The amount of water expelled from the cell and the rate of contraction are related to the osmolarity of the environment. In hyperosmotic environments less water will be expelled and the contraction cycle will be longer. The most researched CVs belong to the protists Paramecium, Amoeba, Dictyostelium and Trypanosoma, and to a lesser extent the green alga Chlamydomonas. Not all species that possess a CV are freshwater organisms; some marine and even soil microorganisms also have a CV. The CV is predominant in species that do not have a cell wall, but there are exceptions (notably Chlamydomonas). Evolutionarily, the CV was mostly eliminated in multicellular organisms, but it still exists in the unicellular stage of several multicellular fungi, as well as in several types of cells in sponges (amoebocytes, pinacocytes, and choanocytes).
On Location With Physicist Brian Cox For His New Wonders Of Life Series! Craig Smith 2012-04-19 | I was recently invited by the BBC to film microscopic sequences on location in Kentucky with physicist Brian Cox for his new documentary series "Wonders of Life". The five part series explores, among other things, how an organism senses and reacts to it's environment. It will air in the US later this year on The Science Channel.
One Drop of Water! Amazing High Definition Microscopy Video! 1080P! Craig Smith 2012-04-17 | The amazing diversity of life found in a single drop of water. ICE Lighting.
Ciliated Protozoan Oxytricha. 200X-2000X. Differential Interference Contrast. Craig Smith 2012-04-16 | Oxytricha is a ciliated protozoan. The protozoa are single celled eukaryotes, and so unlike bacteria, and like animals and plants, have a nucleus. Most ciliates inhabit the free-living microbial world (anywhere where there is water, at least occasionally) and are some of the most obvious, since they are both large and generally very motile, propelled though the water or scuttling along surfaces with the aid of numerous cilia. Most ciliates are predators in the microbial world, eating bacteria and other protists. Many ciliates can from cysts when starved or otherwise stressed. The cysts are very tough, and can be dried and survive for years-when put back into water with food, the ciliate hatches out again
Reel For Anupama_3. Amazing High Definition Microscopy Video! 1080P! Craig Smith 2012-04-15 | Reel For Anupama_3
