The yellow coating over the barnacle and the rest of the tire reef here is likely to be another of the Invasive Tunicates called  Didemnum sp.

For more information about invasive tunicates, visit the Invasive Tunicate Page at Pacific Northwest Scuba.  It's a great resource.

Three Tree Point North, May 18th, 2006.

This is a barnacle molt.  It is not likely to be from a giant barnacle, but I thought it would be appropriate here.  Barnacles are within the phylum arthropoda for many reasons, one of which is that it sheds its exoskeleton, similar to other arthropods such as crabs and insects.  It is much easier to see in the large view...

Three Tree Point North, May 26th, 2006.

Keystone Jetty
November 11th, 2006

Keystone Jetty
November 11th, 2006

Keystone Jetty
November 11th, 2006

The two feeding pictures here are not from Giant Barnacles, but since this is the only barnacle page I have so far, I'm including them here.  These show smaller barnacles (possibly common acorn barnacles) feeding by catching small food items in the water column.  Before diving, I thought barnacles were boring.  Until I got to watch them feed while underwater, that is.

Redondo
10-12-2006