Nudibranchs (pronounced various ways, including NEW-duh-branks) are a family of sea slugs. They typically lack shells and are distinguished by their exposed gills, which is what gives them their ...

Nudibranchs, commonly known as sea slugs, are a group of shell-less marine molluscs. Their name means 'naked gill', referring to the breathing apparatus on the outside of their soft bodies. Dorid ...