Florida State University researchers studying male green sea turtles off the coast of Brazil have discovered two distinct ...

A study of 143 piercing tools, from tusks to love darts, finds they trade off piercing ability for durability. And no one ...

Islands are widely recognized as natural laboratories of evolution. The ocean restricts movement among islands, allowing ...

The Arctic whales are the only known animals with straight tusks, and ones that consistently twist to the left. New research ...

Her hair, which she’d worn in a twisted knot, became the spiral tusk. The tusk is actually a canine tooth in the left upper ...

Discover why Kemp’s ridley sea turtles matter, the threats they face, and how WWF is helping protect this endangered species.