The vaquita is the most endangered marine mammal and needs as much protection as possible.

Jim Wickens discovers fishermen are using formaldehyde in their fish to keep them from rotting.

After discovering an illegal gill net, Captain Oona Layolle's crew pulls up a dead white shark, a species protected by the Mexican government.

A humpback whale trapped in an illegal fishing net is freed by a Sea Shepherd crew!

Crew members on the Sam Simon are hauling up icefish nets to free the mangled fish.

Crew members on the Sam Simon are hauling up icefish nets to free the mangled fish.

Palau is a protected nature reserve, but that doesn't stop poachers. But other fisherman will goto extreme lengths to stop them.

Palau has some of the richest fish stocks in the world. Officials are trying to keep this beautiful place unspoiled.

The crew of the Sam Simon is in for a fight when they find toothfish poachers.

Chilean sea bass is actually the toothfish, a species who is being poached at an alarming rate.

The crew of the Bob Barker won't stop at anything to stop illegal fishing.

Jim Wickens boards a fishing boat to see how much of the catch is used as fish food.