dwise1 writes:
Actually, the term "dolphin" is used to describe either a cetacean ("whale-thingy") or a fish which is also known as the mahi-mahi or dorado.
Well, live and learn. So, the catastrophological viewpoint on the mahi-mahi would be that it is a kind of living fossil. It's obviously a micro-evolutionary intermediate between the original fish pair on the Ark and the cetaceans.
Thanks to the three people on the thread who've spotted this possibility, as it could be a landmark in catastropho-paleontology, and a clue towards the understanding of post-flood marine hyper-microevolution.