17 Perforatus perforatus

Calcareous base plate. Usually left on substrate when barnacle removed. This one had poor grip on smooth fibreglass of pontoon, held in position by sponges etc. Portland Harbour, Dorset. April 2012.

 

Full SPECIES DESCRIPTION at flic.kr/p/c1w9U3

Sets of OTHER SPECIES at: www.flickr.com/photos/56388191@N08/collections/

 

Done