Among the novelties of
Assassin's Creed II: Black Flag will be "underwater" stages in which we will have to explore the seabed in search of sunken galleons and other treasures, and others that we will hunt the sharks in order to then sell the meat. We propose two videos that show us these game stages: the first dedicated to underwater sections, with the gameplay that starts at 0:39, while the second shows the same sequence but you can see it in its entirety at 2:58. Good vision.
MX Video - Assassin's Creed IV: Black Flag