The Panthalassic Ocean once covered most of Earth, but scientists believe it may have become a brutal battleground dominated ...

The deep sea is famous for strange and terrifying creatures, but some rivers may be even more dangerous. Freshwater systems can pack extreme predators, aggressive competition, and parasites that ...

Shark teeth are a marvel of evolution. They are so sharp that many island cultures once used them as weapons and tools to hunt and cut up meat. Unlike human teeth, shark teeth line the mouths of these ...

The Atacama Trench, located off the coast of Peru and Chile, is one of the deepest oceanic regions on our planet, and scientists think it could be an ecological haven. A new study describes a four ...

Shark teeth are “highly developed weapons built for cutting flesh, not resisting ocean acid,” Baum said. Sharks will go through thousands of teeth in a lifetime, and the teeth are critical for ...

A group of apex predators was seen off the coast of California, a company said. Getty Images/iStockphoto The ocean’s top predator was seen on the hunt for its next meal off the coast of California, ...