At the end of the semester in the advanced invertebrate zoology course I took, my rather dry, boring professor made the only joke I remember him ever uttering. We had just finished the phylum ...

There is a kind of soft, toxic snail that lives in the sea called a Nudibranch. The many kinds of Nudibranch all have intense coloration and weird shapes — so weird, in fact, that National Geographic ...

The summer months bring low morning tides along the California coast, providing an opportunity to see one of the state’s most unusual inhabitants, sea slugs. Also called nudibranchs, many of these ...

One of the most striking creatures now appearing in your neighborhood tidepool is the purple fan nudibranch, a shell-less snail that comes in circus colors, can perform what sounds like a magic trick ...

Nudibranchs are snails without shells. The common name of these animals is sea slugs. Hawaii hosts about a thousand nudibranchs, some species still unnamed. The excellent website “Sea Slugs of Hawaii, ...

From an ecological perspective, our oceans are as special as our land. Seawater makes up more than 70% of the Earth’s surface. Oceans teem with an enormous variety of animal groups poorly known to ...

“Naked lungs,” nudibranchs: Undulant sea slugs, frilled and harlequin. They are hermaphrodites and cannibals. Male or female, mate or lunch. Permutations abound. Imagine: you meet at San Francisco’s ...

The summer months bring low morning tides along the California coast, providing an opportunity to see one of the state’s most unusual inhabitants, sea slugs. Also called nudibranchs, many of these ...