Selenka, 1867
S. horrens is a variable, grey to green/black sea cucumber. It is often variegated with dark patches. It is a medium-sized species (to 300 mm) with a smooth tegument but large and irregular papillae (S. horrens photo[/l]). The big tubercles and irregular body form give an "irregular, soft and almost repulsive" appearance ([l][m]Literature[/m][r]Clark, 1946[/r]Clark, 1946). Spicules are tables and large "C" bodies (S. horrens spicules[/l]). S. horrens many be found on [l][m]Glossary[/m][r]Reef[/r]reefs, below rocks on flats.