For centuries, massive teeth washing ashore left people wondering what kind of monster once ruled the seas. Those teeth belonged to the megalodon, the largest shark to ever exist. In this video, ...

The deep sea is home to some of the largest and strangest creatures on Earth. Scientists have long noticed a pattern of extreme size at great depths, but the reasons remain debated. Factors like ...

Scientists in New Zealand have discovered what may be the biggest example of the species ever recorded—at more than 13 feet ...

The blue whale is the largest animal known to have ever lived, reaching lengths of nearly 100 feet and weighing more than 300 ...

'Thousands and thousands' of these curious creatures have been showing up on the Texas shoreline, expert says. What are they?

Jessica Varrato, an animal rescue technician at Mystic Aquarium, said she started off as a part-time clinic volunteer 10 years ago before dedicating her life to helping animals in need. The ...

These corals are mostly found in deep waters and are used for medicine and jewelry in many cultures.

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...

The ocean floor is becoming a massive plastic dump, with debris accumulating in deep-sea canyons and harming marine life.

Australia is doing absolutely everything to protect its most iconic ecosystem—perhaps except the thing that matters most.

When Ted Judah goes scuba diving off the coast in Monterey Bay, he normally swims at the surface to the area above the dive site and then descends. But on the morning of Dec. 30, the water was ...

A baby sea lion wandered out of the water in California and crossed traffic to a parking lot, where he was wrangled by ...