Marine animals can be fascinating and quite beautiful. However, you should not approach some of them. Certain fish and jellyfish are highly poisonous, and contact with them can sometimes be fatal.

Far below the ocean’s surface, where sunlight disappears and pressure reaches crushing levels, some of the planet’s strangest ...

Some of the ocean’s deadliest animals are almost impossible to see. This video examines a jellyfish so small it can fit on a fingernail, yet capable of delivering life-threatening venom. Its size ...

Scientists analyzed thousands of autopsies of seabirds, sea turtles and marine mammals and found that even small amounts of ingested plastic can be deadly. By Sachi Kitajima Mulkey Two baseballs for a ...