maybe
They are but some of them can be dicks sometimes.
this is very true and i thank you, for mentioning this fact
dolphins used to live on land and went back into the ocean, does that sound plausible?
Apparently whales did the same thing. The morphology seems to indicate that this is what happened.
sorry for the late reply (6 years lol), but yes science seems to have evidence, they went on land and then back into the water. sounds so unlogical to me!