The biggest predator of fish like cod is other fish - and seals keep fish like that in check.

The shark is the apex predator in the sea. Sharks have molded evolution for 450 million years. All fish species that are prey to the sharks have had their behavior, their speed, their camouflage, their defense mechanisms molded by the shark.

Bluefin tuna is sort of like the cheetah of the ocean. It's the fastest fish. It's a warm-blooded fish. But it's got a $100,000 price tag on its head.

Taiwan gives a lot of foreign aid to Costa Rica, so it looks like they are basically buying the right to fish, even though it's not legal.

If we wipe out the fish, the oceans are going to die. If the oceans die, we die. We can't live on this planet with a dead ocean.

The Polynesians used to have a system where they proclaimed a fishing area as 'taboo.' If any fisherman was caught fishing in a taboo area, they would be killed. The Polynesians understand that the fish had to be given a chance to recover.