2-Headed Shark Attack / Mega Shark Versus Crocosaurus

A ship carrying a party of students is attacked and sunk by a monstrous mutated shark with two heads. The survivors escape to a deserted atoll, only to find their safe refuge is sinking beneath the waves, and the unnatural predator has followed them.

A monstrous prehistoric shark that had previously done battle with a giant octopus returns to cause more devastation, this time facing an equally enormous crocodile found in the jungles of Africa.