How realistic are four legged aquatic animals?

On earth most of our sealife is fishlike (excluding a few other species such as squid/octopus). As far as I'm aware there are no legged creatures which live solely in the sea.

In my world I'd like to have creatures like the sando aqua monster from Star Wars, it clearly has four legs and uses it's tail to help with swimming.

Firstly could this creature evolve? Second, is it likely that a creature with a body shape such as this would live purely in the water or would they congregate on land too?

For a bonus point is it likely that a creature like this would breath with lungs or gills?

is a duplicate

This question has been asked before and has already been answered. It should be marked as a duplicate.

Please enter the URL of the proposed duplicate in the details field below.

not constructive

This question cannot be answered in a way that is helpful to anyone. It's not possible to learn something from possible answers, except for the solution for the specific problem of the asker.

Communities

How realistic are four legged aquatic animals?

0 comment threads

0 answers