Watch: Extremely rare deep-sea fish spotted off the California coast

"In more than three decades of deep-sea research and more than 27,600 hours of video, we’ve only seen this particular species four times!"

New species of crown jellyfish discovered in California

From the deep: A rare giant squid washes up alive in Japan

A giant squid washed up on the beach is rare – a live one is even rarer.

Shark swallows camera giving us a unique look inside its mouth

No cameras (or sharks) were harmed in the making of this clip.

Double dose of dumbo octopus cuteness filmed in central Pacific Ocean

Not one, but TWO dumbo octopuses.

WATCH: Squid's incredible colour-changing camouflage revealed for the first time

Sometimes scientific discoveries happen entirely by accident. 

Great white sharks occasionally hunt in pairs - new research sheds light on social behavior of these mysterious predators

Researchers have discovered that great white sharks are more social than previously thought.

We need to talk about the strawberry squid's crazy eyes (video)

What have you done to it? What have you done to its eyes?!

Watch: Dolphin "tail slaps" fish several feet into the air

There are few limits to the imaginative methods dolphins use to secure their meals

Massive breeding colony of icefish consisting of millions of nests discovered in Antarctic Sea

Researchers working in the icy waters of Antarctica's Weddell Sea discovered around 60 million icefish nests dotted over an area of ocean floor that...

Rarely seen blanket octopus filmed 'dancing through the water' on Great Barrier Reef

"Seeing one in real life is indescribable."

Bringing out the Dead

Scientists are sinking carcasses into the deep ocean and studying what turns up to feast.

Watch: Surfers catch waves while great white shark catches air

Gnarly, dude.

Paddleboarders film gigantic sunfish off the Californian coast

"That might be the biggest sunfish I've ever seen"

In photos: Peculiar 'pig-faced' shark found floating in the Mediterranean

A squat shark with a piglike face has been popping up all over social media lately.