Nudibranchs are gastropod mollusks, like mussels, clams and scallops. Some are strikingly beautiful.

Researchers finally identify the ocean’s “mystery mollusk” It's a nudibranch, but so distantly related that it gets its own phylogenetic family.

Nudibranch is a direct-purchasing coffee operation, which is often touted as much healthier for the supply chain than relying on negotiators and tertiary importers.

In a fascinating video, researchers have revealed a new and bizarre see-through species of sea slug floating around the midnight zone of the deep sea. Nicknamed the "mystery mollusc" by the ...

Meet Doto greenamyeri, The Out-Of-This-World Sea Slug With "Donuts" On Its Back The dazzling nudibranch scooped a prize in Underwater Photographer of the Year 2025.

Have you ever heard of a nudibranch? They're colorful mollusks with no shells and you can see them at the Bailey-Matthews National Shell Museum.

This particular nudibranch is the first known to live in the deep water column—the ocean’s midnight zone—between 3,300 feet and 13,100 feet deep (1,000 to 4,000 meters).

The discoverers say the creature is a surprising new kind of nudibranch, or sea slug. Nudibranchs (Latin for “naked gills”) get their name from that fact that they’re nude, unlike their ...