again: you don't think that life is just going to roll over and die without a fight, do you? if it comes down to it, i'd expect more than one type of fish to give it a shot.
land sharks. consider the carnage. just another reason to fight global warming.
http://www.cbc.ca/news/canada/newfoundland-labrador/moose-eating-shark-rescued-in-newfoundland-harbour-1.2434102
took me a while to find something specific worth posting. the idea is very reasonable, but only with fish that reproduce very, very quickly. which probably means not sharks.
http://jeb.biologists.org/content/55/2/421.full.pdf
so, i'm going to hold to that statement. i'd expect that, in the next fifty years, if the oceans continue to fill up with carbon, at least one species of fish will try and make the jump. seriously...