INVERTEBRATES

We explain the science behind the answer.

From a ginormous relative of the garden pillbug to fish with translucent heads, these organisms are adapted to the dark, cold, pressurized environment of the deep sea.

Toxic explosives were no barrier for the fish and invertebrates colonizing a World War II-era munitions dump in the Baltic Sea, according to a new study.

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

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.

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.

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

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

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.

They make the adorable sound with their wings when they're startled. You can listen to them for yourself.