Uploaded April 2025 | Updated September 2026, 13 minutes ago
Check out Manta Sleep here tinyurl.com/54xsxtt4 and make sure to use bizarrebeasts for 10% off your order! And then, take a nap!
Why are there dolphins in rivers, and why do they look... like that? There are a handful of very similar-looking, but somehow unrelated river dolphins around the world. Where did they all come from, and what is it about living in rivers that causes dolphins to look so specific?
Get your own river dolphin pin here: https://complexly.store/products/bb-april-25-river-dolphins
Subscribe to the pin club here: https://complexly.store/products/bizarre-beasts-pin-subscription
This month's pin is designed by Rachel Calderon Navarro. You can find out more about her and her work here: rachelcalderonnavarro.com
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Follow us on socials:
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#BizarreBeasts #dolphin
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Sources:
riverdolphins.org/river-dolphins-worldwide/amazon-river-dolphin
riverdolphins.org/river-dolphins-worldwide/tucuxi
fisheries.noaa.gov/species/indus-river-dolphin
riverdolphins.org/river-dolphins-worldwide/ganges-river-dolphin
us.whales.org/whales-dolphins/species-guide/baiji
pmc.ncbi.nlm.nih.gov/articles/PMC17202
sciencedirect.com/science/article/pii/B978012804327100220X
https://animalia.bio/bolivian-river-dolphin
animaldiversity.org/accounts/Inia_geoffrensis
marinemammalscience.org/science-and-publications/list-marine-mammal-species-subspecies
scribd.com/document/751826619/i2
pmc.ncbi.nlm.nih.gov/articles/PMC2391192
sciencedirect.com/science/article/pii/B9780123735539000614
onlinelibrary.wiley.com/doi/10.1111/j.1748-7692.2006.00003.x
pmc.ncbi.nlm.nih.gov/articles/PMC5701545
pmc.ncbi.nlm.nih.gov/articles/PMC7511723
onlinelibrary.wiley.com/doi/10.1111/j.1748-7692.2011.00526.x
doi.org/10.1242/jeb.120501
books.google.com/books?hl=en&lr=&id=2rkHQpToi9sC&oi=fnd&pg=PP1&dq#v=onepage&q&f=false
royalsocietypublishing.org/doi/10.1098/rspb.2000.1385
sciencedirect.com/topics/earth-and-planetary-sciences/miocene
royalsocietypublishing.org/doi/10.1098/rspb.2019.1771
nationalgeographic.com/science/article/fossil-river-dolphin-lived-out-at-sea
animaldiversity.org/accounts/Pontoporia_blainvillei
us.whales.org/whales-dolphins/species-guide/franciscana
dolphins-world.com/tucuxi-sotalia-fluviatilis
animaldiversity.org/accounts/Sotalia_fluviatilis
link.springer.com/article/10.1007/s00227-005-0078-2
nature.com/articles/s41467-018-03722-x
https://animalia.bio/yangtze-finless-porpoise?environment=1507
riverdolphins.org/best-practices/addressing-threats/threat-overview-and-ranking
royalsocietypublishing.org/doi/full/10.1098/rspb.2016.2348
------
Images:
docs.google.com/document/d/14YdFeGf3h5RSWNZ6S_30Og2RUwVuHZJyNnkdl04ZlQ8/edit?usp=sharing
Check out Manta Sleep here tinyurl.com/54xsxtt4 and make sure to use bizarrebeasts for 10% off your order! And then, take a nap!
Why are there dolphins in rivers, and why do they look... like that? There are a handful of very similar-looking, but somehow unrelated river dolphins around the world. Where did they all come from, and what is it about living in rivers that causes dolphins to look so specific?
Get your own river dolphin pin here: https://complexly.store/products/bb-april-25-river-dolphins
Subscribe to the pin club here: https://complexly.store/products/bizarre-beasts-pin-subscription
This month's pin is designed by Rachel Calderon Navarro. You can find out more about her and her work here: rachelcalderonnavarro.com
You can cancel any time by emailing hello@dftba.com
Follow us on socials:
Instagram: instagram.com/bizarrebeastsshow
Facebook: facebook.com/BizarreBeastsShow
Bluesky: https://bsky.app/profile/bizarrebeastsshow.bsky.social
#BizarreBeasts #dolphin
-----
Sources:
riverdolphins.org/river-dolphins-worldwide/amazon-river-dolphin
riverdolphins.org/river-dolphins-worldwide/tucuxi
fisheries.noaa.gov/species/indus-river-dolphin
riverdolphins.org/river-dolphins-worldwide/ganges-river-dolphin
us.whales.org/whales-dolphins/species-guide/baiji
pmc.ncbi.nlm.nih.gov/articles/PMC17202
sciencedirect.com/science/article/pii/B978012804327100220X
https://animalia.bio/bolivian-river-dolphin
animaldiversity.org/accounts/Inia_geoffrensis
marinemammalscience.org/science-and-publications/list-marine-mammal-species-subspecies
scribd.com/document/751826619/i2
pmc.ncbi.nlm.nih.gov/articles/PMC2391192
sciencedirect.com/science/article/pii/B9780123735539000614
onlinelibrary.wiley.com/doi/10.1111/j.1748-7692.2006.00003.x
pmc.ncbi.nlm.nih.gov/articles/PMC5701545
pmc.ncbi.nlm.nih.gov/articles/PMC7511723
onlinelibrary.wiley.com/doi/10.1111/j.1748-7692.2011.00526.x
doi.org/10.1242/jeb.120501
books.google.com/books?hl=en&lr=&id=2rkHQpToi9sC&oi=fnd&pg=PP1&dq#v=onepage&q&f=false
royalsocietypublishing.org/doi/10.1098/rspb.2000.1385
sciencedirect.com/topics/earth-and-planetary-sciences/miocene
royalsocietypublishing.org/doi/10.1098/rspb.2019.1771
nationalgeographic.com/science/article/fossil-river-dolphin-lived-out-at-sea
animaldiversity.org/accounts/Pontoporia_blainvillei
us.whales.org/whales-dolphins/species-guide/franciscana
dolphins-world.com/tucuxi-sotalia-fluviatilis
animaldiversity.org/accounts/Sotalia_fluviatilis
link.springer.com/article/10.1007/s00227-005-0078-2
nature.com/articles/s41467-018-03722-x
https://animalia.bio/yangtze-finless-porpoise?environment=1507
riverdolphins.org/best-practices/addressing-threats/threat-overview-and-ranking
royalsocietypublishing.org/doi/full/10.1098/rspb.2016.2348
------
Images:
docs.google.com/document/d/14YdFeGf3h5RSWNZ6S_30Og2RUwVuHZJyNnkdl04ZlQ8/edit?usp=sharing
