
Shark Quest
Sharks are in trouble.
Fifty shark species are at high risk of extinction, and another sixty-three are threatened. These intelligent, mysterious—and sometimes scary—fish evolved about 420 million years ago. They have adapted to survive deep in the ocean and in shallow-water habitats. Commercial fishing and finning are threatening shark populations. So is water pollution. Marine biologists and other...
Sharks are in trouble.
Fifty shark species are at high risk of extinction, and another sixty-three are threatened. These intelligent, mysterious—and sometimes scary—fish evolved about 420 million years ago. They have adapted to survive deep in the ocean and in shallow-water habitats. Commercial fishing and finning are threatening shark populations. So is water pollution. Marine biologists and other...