Uploaded April 2008 | Updated September 2026, 4 hours ago

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Why is this so hard for some to understand? Here I show just how close different species, genera, families, etc actually are and how little it would take for one species (through small changes) to become something completely different after many generations of such changes.

I also introduce you to several species that could very well be considered "transitional"...like a fish with legs! ...or a fish that breathes air!