purple rock barnacle has jagged looking outer plates.
It is flat, light purple/grey and usually about 1/2 cm
in length. When feeding, feather like cirri stick
out of the center opening of the plates.
species is found on high shorelines in large bunches.
They are found on rocks a little below the splash zone.
(include invasive, native, endemic): Indo-Pacific
rock barnacles are filter feeders, they sweep small paritcles
like plankton out of the water. Barnacles are eaten
by whelks and blue mussels.
not step on barnacles, their plates might be sharp or you
might crush them.
species is pretty common and easy to spot. It was
found in the Diamond Head and Coconut Island sites.
Removing barnacles from rocks can be challenging so if possible,
it is smarter to take the whole rock with you.