Only if they are descended directly from fish
Sharks for example have that trait.
If they are descended from land animals that then returned to the ocean, their tails would move up and down, like dolphins, whales etc.
( , Fri 16 Sep 2022, 3:01, Share, Reply)
Sharks for example have that trait.
If they are descended from land animals that then returned to the ocean, their tails would move up and down, like dolphins, whales etc.
( , Fri 16 Sep 2022, 3:01, Share, Reply)