The marine mammal — an infrequent visitor to the shores of the Emerald Isle — was spotted in the Waterford Estuary on the ...

Scientists have spent a lot of time thinking about how the nutrients in whale feces—also known as whale pump —benefit species ...

It appears to be an alien planet. What is the ocean's deepest point? What lives in the Mariana Trench—and what has been discovered recently?

In a rare ocean encounter, two 45-ton whales chase off a whitetip shark to protect a diver from potential danger.

False killer whales - which are in fact a dolphin - are typically deep-sea dwellers, and are one of the rarest marine mammals ...

— Spade-toothed whales are the world’s rarest, with no live sightings ever recorded. No one knows how many there are, what ...