Nudibranchs are sea slugs. They are soft-bodied animals, and like clams, snails and squid, they are mollusks. Nudibranchs belong to phylum Mollusca, class Gastropoda, order Nudibranchia. Found in ...

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 percent of the Earth’s surface. Oceans teem with an enormous variety of animal groups poorly known ...

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 ...

This National Sea Slug Day, celebrate the addition of 17 new species of nudibranch to the tree of life. Adorned in lavish patterns and colors that range from yellow polka dots to shades of mauve and ...

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 ...

Melissa Breyer is Treehugger’s former senior editorial director. Her writing and photography have been featured in The New York Times, The Guardian, National Geographic, Audubon Magazine, and ...

I never really understood the motivation behind geocaching, the recreational activity in which hobbyists locate hidden treasures using GPS. It seemed like a lot of effort for a tiny reward. Then I ...

Guest Post: This past winter my good friend and excellent nature photographer Michael Ready and I were out exploring the Rocky Intertidal zone at Cabrillo National Monument in San Diego, Ca. While ...