Taxonomy Search:

Clavelina lepadiformis
Image courtesy of Esculapio [CC-BY-3.0], via Wikimedia Commons
Clavelina lepadiformis
Taxonomic Group: Tunicates


The Light Bulb Tunicate, Clavelina lepadiformis, is a colonial tunicate with transparent zooids joined at the base by short stolons. Fully developed zooids are clear with white, yellow or pink bands around the oral siphon and dorsal lamina, giving them a light-bulb appearance. Clavelina lepadiformis is native to Europe, ranging from southern Norway to the Mediterranean Sea. It has been introduced to the Azores, South Africa, South Korea, and the US East Coast. It was first discovered in US waters in 2009 in Long Island Sound, Connecticut. The introduction of this species is probably a result of ship fouling. No impacts have been reported so far, but it is a recent introduction in North America and the introduced region is small.

This is some default tab content, embedded directly inside this space and not via Ajax. It can be shown when no tabs are automatically selected, or associated with a certain tab, in this case, the first tab.


Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
Access Date:

Marine Invasions Lab
Smithsonian Environmental Research Center

P.O. Box 28
647 Contees Wharf Road
Edgewater, MD 21037-0028 Tel: 443 482 2200
Fax: 443 482 2380

Databases Overview| Chesapeake Bay | National Database |