Main Beach 12/8/05
A comment from my friend Joao Pedro:
"These polychaete worms are (most probably, I'm no expert) Phragmatopoma californica, a member of the Sabellariidae family. They're closely related to Sabellaria alveolata, found in eastern Atlantic shores (like here in Portugal), whose colonies resembling large sand castles can often be seen during the lower tides.
I've never looked carefully at these animals but because of this shot I'll place Sabellaria colonies in my list for the next dive."