The mysterious Greenland shark has an unusually long lifespan, and scientists are beginning to think they finally know why.

A guitar-shaped shark, a fan-like coral and a venomous ... remotely operated vehicles during 10 ocean expeditions, the species have all been deemed new to science, according to Ocean Census ...

All over the world, their meat is being consumed. Every year, about 100 million sharks are hunted and killed. There are about 536 known species of shark in the world, and 316 of them are ...