ih566's picture

Barnacles

Observed: 25th October 2012 By: ih566
2012-10-25 12.55.21-2 - Copy
Description:

On the underside of blue plastic barrel used as a racing mark in Strangford Lough.

Identifications
Species interactions

No interactions present.

Comments

scubamann's picture

barnacles

without a scale for size (millimetres count) it is hard to judge.

gramandy's picture

you're right....

....but the other barnacles that look like this

B.improvisus - usually brackish/estuarine waters and the sutures meet differently to the pic
B.perforatus - much more symmetrical and very big when older.

The pics show mature barnacles - acorn barnacle crenatus for me too.