Sharks are ancient apex predators with a reputation for being both formidable and mysterious. With over 375 species, they range from harmless to potentially dangerous, though only a few are known ...

Pufferfish are so unusual and pudgy-looking that they almost seem cute. But this animal didn't survive for eons in such an unforgiving environment as the ocean because it's fun to look at.

Climate change and invasive species will reduce habitat space for native fish and increase harmful interactions.

There are over 120 species of puffer fish, and 22 different kinds are approved by the Japanese government for use in restaurants. But one is more prized, and more poisonous, than the others ...