Deep Blue Sea
One of the many, many Jaws knockoffs, with a bit of Dr. Frankenstein mad scientist thrown in, 1999's Deep Blue Sea was most notable for defying expectations and horror movie tropes in terms of expected deaths and survivors. It also provides some templates reused in Jurassic Park and its various sequels including an untimely storm and Thomas Jane as a sort of shark wrangler for a pack of killer creatures far smarter than their creators.
