Purussaurus

The Purussaurus is an uncommon enemy found in the Ancient Abyss.

Description
Purussaurus is a presumably extinct genus of giant caiman and one of the largest known crocodyliformes ever to have existed. They have, however, survived in the deep, mysterious Ancient Abyss and will terrorize any explorers that manage to reach its ancient ecossystem.

Behavior
The Purusssaurus will charge at the submarine and tear its way inside, where it will bite anyone that approaches it. Due to its high health and quick, hard to avoid attacks, it can pose a huge threat to the crew if it manages to get inside the submarine.