WATCH: Bizarre tentacled creature filmed in Pacific Ocean could be a new species

“My mind is blown right now!”

New species of crown jellyfish discovered in California

How the first cat-like sabre-tooth predator was discovered – and why it differs from modern cats

The first sabre-toothed cat-like predator was not much larger than a bobcat, but it had long teeth and a strong jaw to cut through thick skin.

New snake species discovered via Instagram photo

You just never know where a new species might turn up.

Several new and "rediscovered" species found in the Bolivian Andes

A scientific foray up into the rugged cloud forests of the Bolivian Andes has uncovered an all-around treasure trove of biodiversity.

These sharks evolved for walking and that's just what they'll do

Four species of walking sharks have been discovered off the coast of northern Australia and New Guinea.

This adorable, thumbnail-sized pygmy squid is a new species

New to science: the Hallam's pygmy squid, officially known as Idiosepius hallami.

New species discoveries from the unique and threatened Greater Mekong

Two fish, three mammals, 11 amphibians, 11 reptiles and 88 plants. 

Newly discovered Turkmenistan bug loves caves, will work for cheese

Leave a bunch of alcohol and stinky cheese next to a pile of bat poop in a cave, and you never know who'll show up to investigate!

Octopus's garden: New shrimp species found in the den of a 'Super Star' cephalopod

A newly discovered tiny mysid shrimp and a common octopus share a symbiotic relationship that's never been observed before. 

This huge toothy fish claimed top-predator status in a post-extinction world

This huge prehistoric fish wasn't just a cool predator – it may also help us wrap our minds around what to expect as the planet continues to change...

The four-year treasure hunt for the hoodwinker sunfish

When Marianne Nyegaard began her studies on sunfish off Bali in Indonesia, she didn’t expect to discover an entirely new species! 

This surprisingly huge, cave-dwelling spider is a brand new species

Meet the Sierra Cacachilas wandering spider.

Introducing Europe's first cave fish!

This pale, blind cave fish is the first of its kind ever discovered in Europe.

This gorgeous new frog species was hiding in plain sight

The tropical forests of Ecuador are home to an astonishing diversity of frogs – and now one more has joined the list.