Sea Slug Sea slugs are mollusks, related to the shelled terrestrial snails that we are all too familiar with on land. They are distributed everywhere in both tropical and temperate seas, with the greatest numbers and the largest kinds found in tropical waters. Most sea slugs are rather small under 1 inch and some are as long as 12 inches, the largest which is found in the Great Barrier Reef of Australia. Sea slugs display a great array of solid colors and patterns, and are also known as “butterlfies of the sea”. Most sea slugs have feathery structures (ceratia) on the back, very often in contrasting colours, and they have two pairs of tentacles on the head used for chemosensory and... Read more»










