Surf Barnacle Catomerus polymerus
The Surf Barnacle is a distinctively flattened barnacle with eight main shell plates, surrounded by many smaller plates, becoming smaller towards the lower edge. Even in eroded specimens the outer plates are still distinctive.
The exterior colour of the Surf Barnacle is grey-white with a greenish tinge.
It ranges from mid New South Wales south around southern Australia to Western Australia.
It occurs on most exposed rocky ocean shores exposed to high energy waves, at mid to low-tide levels. It prefers heavy wave action and spray. On some vertical rock faces it may be found in large numbers.
The Surf Barnacle is normally found just above the Galeolaria tube worm zone.
Why is this called the Surf Barnacle ?
Why does this barnacle prefer to live in areas with heavy wave action ?
Bennett, I. (1987) W.J. Dakin's classic study: Australian Seashores. p.246, Angus & Robertson, Sydney.
Davey, K. (1998) A Photographic Guide to Seashore Life of Australia. p.40, New Holland, Sydney.
Edgar, G.J. (1997) Australian Marine Life: the plants and animals of temperate waters. p.172, Reed Books, Kew.
Quinn, G.P., Wescott, G.C. & Synnot, R.N. (1992) Life on the Rocky Shores of South-Eastern Australia: an illustrated field guide. p. 61, Victorian National Parks Association, Melbourne.
Marine Research Group of Victoria (1984) Coastal Invertebrates of Victoria: an atlas of selected species. p.104, Museum of Victoria, Melbourne.
Underwood, A.J. ( ) Science Field Guides: Barnacles. p.11, Reed Education, Sydney.
Underwood, A.J. & Chapman, M.G. (1993) Seashores: a beachcomber's guide. p.36, New South Wales University Press, Sydney.