invertebrates

Even this snowy owl is totally surprised by some of these facts.

You’ll never look at these creatures the same way again.

Despite the name, some of these beachside pests aren’t even insects at all, though they could still hop up during your summer vacation in more ways than one.

You'll want to welcome these insects into your garden.

Don’t kill these insects—consider them your friends!

Prettier to look at than they are to actually swim with.

When it comes to jellyfish stings, urine is often cited as an effective remedy. But does it really work as a first-aid treatment?

C. elegans nematodes in their squiggly, non-towering mode.

The microscopic worms are one of only a few species known to assemble into “superorganisms” that act and move collectively.

See the first colossal squid ever caught on camera

A baby colossal squid was filmed deep in the South Atlantic—revealing rare footage of the ocean’s heaviest invertebrate.

A new study shows that octopuses become bosses and fish become subordinates when the two species hunt together.

Opening a can of worms, metaphorically speaking, is trying to solve a problem and ending up in more trouble. And the idiom really does refer to actual worms.

The CDC is giving people a very good reason to wash their produce.

Thanks in part to a snail, California bees are fish. No, this isn’t a Mad Lib.

Eumillipes persephone has legs and knows how to use them.

Found 200 feet below ground in Australia, 'Eumillipes persephone' has 1306 legs to scamper around with.

Giant African land snail shells are about the size of an adult human's fist.

The first thing you notice about giant African land snails is that they're ginormous. The second thing is that they're not limited to Africa.

An illustration of a woolly mammoth, blissfully unaware of its species impending doom.

How many ice ages have there been so far? The same number of ‘Ice Age’ movies that have been released. (Five.)

Octopuses never have to say a farewell to arms for long.

The cephalopod is strikingly intelligent, but its most spectacular talent may be its ability to fully regrow arms lost to predators.

Who wouldn't be screaming in this situation?

Our ancestors may have predisposed us to fear spiders, insects, and other many-legged creatures, but there's a lot more to it.

3D movies of shrimp were involved, too—all in the name of seeing if cuttlefish use stereopsis like we do.

jkirkhart35, Wikimedia Commons // CC BY 2.0

After thousands of 'penis fish,' or fat innkeeper worms, washed up on the shores of California, one aquarium decided to give people an up-close-and-personal look at the phallic annelid via livestream.

Kate Montana, iNaturalist // CC BY-NC 4.0

'Urechis caupo' bears a striking resemblance to a specific part of male human anatomy, but the species is usually hidden underground. Something brought them to the surface.

Each fall, millions of migrating monarchs return to Mexico to wait out winter. The gathering makes Woodstock look like a business conference. Here’s how they get there.

In the video, the Deepstaria jellyfish hovers like a ghost before unfurling its billowing bell, giving scientists aboard the 'Nautilus' a rare look at the illusive species.