Planet of the Sharks

In a not-so-distant future, climate change has caused all the ice in the world to melt. Almost all land is now underwater, and the remaining humans are desperately fighting for survival on the oceans and for the remaining sources of drinking water. However, alongside the pirates, the ever-growing shark swarms in the floating cities "Junk City" and "Sanctuary" make life difficult for the survivors. These sharks, led by a massive Alpha Shark, have chosen humans as their primary prey.