The animal features a unique grab bag of traits of other nudibranchs, says study co-author and MBARI marine biologist Steven Haddock. Haddock was present when scientists first spotted the mollusk, ...

With names like “knobby rams-horn,” “masked duskysnail” and “Hoko vertigo,” Pacific Northwest mollusks may have an amusing image, but they’re also some of the most intriguing invertebrates in the ...

The Portuguese man-of-war, or "sailing jellyfish," isn't a jellyfish at all — it's something called a siphonophore, and it's not an "it," but actually a "they." The man-of-war is actually a ...

and what can be described as “weird molluscan worms.” The fossils are striking because they deviate from traditional molluscan forms. Modern mollusks, including gastropods, bivalves ...