Appearance
The transparent tunic and visible yellow or white internal organs give this animal its common name.

Clavelina lepadiformis, (Müller, 1776)
Clavelina lepadiformis, common name the light-bulb sea squirt, is a colonial sea squirt native to the NE Atlantic Ocean.
The transparent tunic and visible yellow or white internal organs give this animal its common name.
This species is a common shallow-water ascidian in Great Britain and Ireland. It occurs from Norway along European coasts south to the Mediterranean. In the Mediterranean the presence of cryptic species has been demonstrated.
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