Far below the ocean’s surface, where sunlight disappears and pressure reaches crushing levels, some of the planet’s strangest ...

Along long stretches of the Texas shoreline, thousands of rare sea creatures have been turning up dead or dying, transforming ...

This article originally published at 'Mass die off': Thousands of rare sea creatures wash up on Texas coast.

Like a scene out of a Jules Verne novel, scientists from Schmidt Ocean Institute recently encountered a giant phantom jelly ...

Boaters recently spotted a group of Risso’s dolphins off the coast of South Africa — a “rare” sight for the area, according to a local tour company. Photo from Doug Bagg, UnSplash Boaters off the ...

A manatee was one of the latest in a long line of rare marine animals to turn heads along the Texas coast last month, and — in this case — hold up a $64 million state construction project. One of the ...

While fishing off the coast of Thailand, a group of fishermen noticed a massive underwater shadow approaching their boat. It turned out to be a rare sighting of an at-risk sea creature. Several ...

A group of “rarely seen” Gervais’ beaked whales was recently spotted near Madeira, a Portuguese archipelago, photos show. Screengrab from the Magic Dolphin ecotour agency A mysterious group of ...

A “rare” True’s beaked whale recently washed ashore in Ireland in what experts say is part of a cluster of strandings. Photo from Milomc123, UnSplash Two rare deep-sea whales recently washed up on ...

Meet the “ghost fish,” a phantom of the abyss. Here’s how we found the first ever proof of its existence just a few years ago. The deep sea is a part of the world that very few humans get the chance ...

After decades of global conservation efforts, green sea turtles are rebounding. However, climate change and human pressures ...