Between eight and 14 feet but can reach up to 23 feet Using this method, scientists discovered Greenland sharks have a life expectancy of at least 272 years and could reach 392, give or take about ...

A rendering of Clavusodens mcginnisi, or “McGinnis’ nail tooth,” an ancient shark that stalked the ocean floor 340 million years ago. Rendering courtesy of the National Park Service A shark ...

Remarkably, fossil shark teeth are also incredibly abundant. Sharks ruled the earth's oceans for 400 million years, and every individual grows and sheds thousands of teeth in their lifetime.

At first glance, the world’s second largest fish might seem menacing: Its gaping mouth has six rows of teeth in its upper jaw, and nine rows below, for a total of about 1,500 tiny, hooked teeth.

Fossils have a way of captivating everyone, no matter their profession or the species unearthed, but ... More there’s something about Megalodon that grips the imagination like no other.