In just 55 years, humans have managed to wipe out 90 percent of the ocean’s top predators.

In just 55 years, humans have managed to wipe out 90 percent of the ocean’s top predators. These are animals like sharks, bluefin tuna, swordfish, marlin, and king mackerel. These predators form a critical part of ocean food chains and their losses could have dramatic flow on effects to ocean ecosystems.