Sea Hares are toxic to dogs. The toxins are found in their skin, slime and ink, which they absorb from the algae they eat.

British scientists reveal a nearly complete pliosaur skull with jaws locked in place, shedding light on Jurassic ocean predators.

Jellyfish have endured every major change the oceans have thrown at them, despite lacking the traits that seem essential for survival. With almost no ability to sense, plan, or defend themselves, they ...

This tree-climbing giant is one of the largest land slugs on Earth – and its bizarre mating ritual is unlike anything else in the natural world.

From spraying mates with urine to changing one's sex, these are the most intriguing courtships in the animal kingdom.

What if you could employ land snails in a similar zero-waste system? Instead of homegrown vegetables, the ultimate yield for your table would be escargots, those glistening nuggets of protein. Yes, ...

Nudibranchs look like fragile, colorful decorations drifting across coral reefs — but their biology tells a different story. These sea slugs steal toxins from their prey and repurpose them as chemical ...

In the mysterious depths of our oceans lives a creature that seems more like science fiction than reality: the psychedelic sea slug. These remarkable marine mollusks have evolved one of the most ...

When Jessica Fujii was in kindergarten, she drew a picture of her future. In a “What do you want to be when you grow up?” booklet, she skipped ballerina and veterinarian, and wrote down something else ...

On a late night in the Philippines, zoologist Terry Gosliner slipped into the waters of a sandy harbor, on the hunt for photos of octopus and other marine creatures. But as he swept his flashlight ...

California Academy of Sciences researchers and collaborators described 72 new-to-science species in 2025, including a bird, fish, plants, sea slugs, and insects found across six continents, from ocean ...