Ρolychaete fauna associated with the coral Cladocora caespitosa (L.) in the Εastern Μediterranean

Analysis of the polychaetefauna in 14 colonies of Cladocora caespitosa at two localities of Chalkidiki peninsula. N. Aegean Se, revealed 87 species, 58 of which are recorded for the first time as associated with this scleractinian coral. Larger colonies (up to 7 kg) contained more species, more individuals and a greater biomass. In one location, depth 3-5 m, Serpulidae were dominant (Vermiliopsis infundibulum, Hydroides pseudouncinata pseudouncinata, Veriiliopsis striaticeps, Spirobranchus polytrema and Serpula vermicularis) but at 16-19 m these were replaced in abundance by errant species, especially Ceratonereis costae.