This species is a common shallow-water ascidian in Great Britain and Ireland. It occurs from Norway along European coasts south to the Mediterranean.[2] In the Mediterranean the presence of cryptic species has been demonstrated.[3]
Description
The transparent tunic and visible yellow or white internal organs give this animal its common name.
References
^Sanamyan, K. (2015). Clavelina lepadiformis (Müller, 1776). In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, R.; Swalla, B.J.; Turon, X. (2015) Ascidiacea World Database. Accessed through: World Register of Marine Species on 2015-12-25
^Tarjuelo, I., D. Posada, K. Crandall, M. Pascual, X. Turon, (2001) Cryptic species of Clavelina (Ascidiacea) in two different habitats: harbours and rocky littoral zones in the northwestern Mediterranean Marine Biology, 139, 3, pp. 455-462.