Trench

The Trench is a location in Finding Nemo.

Finding Nemo
It is a large, dangerous trench. A fish skeleton is seen on a rock, showing dominant fishes and other creatures live in the trench. The Moonfish tell Dory to swim through the trench, not over it, but Marlin denies the Moonfish's advice and convinces Dory to swim over it when they arrive there. It has a sea of Jellyfish above it.