Dolphins evolved from land-dwelling creatures millions of years ago. As they adapted to life in the ocean, they also grew to have many more teeth than their terrestrial ancestors. Because dolphins ...

A study of dolphin jaw anatomy suggests their teeth might act as antennae for sound waves, potentially helping to explain how they hear and use echolocation underwater. “Our findings support the ...

Spinner dolphins have up to 240 teeth, while Risso's dolphins have only 14. Dolphins send out high-pitched sounds and listen for their echoes to build an image of their surroundings.

While the average person has 32 teeth, some species of dolphin possess as many as 240. Why so many? Not all species are quite so lucky – Risso’s dolphins only have four to 14 in their lower jaw.

Rome, the Eternal City, is revered for its history, art, culture, and food. Yet, few people know that less than an hour away, ...

Dolphin teeth necklaces for sale at a market in Honiara, the capital of the Solomon Islands. In recent years, most villagers have fled to a neighboring island.