
The Fish-Tetrapod Transition
In Our Time: Science
What Advantages Do Transitioning Creatures Have?
There are no terribly good analogues of these early transitional forms, but there are a number of different fishes we can look at and see glimpses or aspects of their behaviour. So for example, fishes that walk, why have limbs in the water? There are actually a wide variety of fishes today that use all the gates we see in tetrapods under water. Another recent example is an epilette shark - they've been known to take excursions out of the sea on shore and walk underwater. It's now been noted that they can manage that for a couple of hours. That would have been a whole new world, a world that you could explore and make your own. What do
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