Syllidae SubFamily : Eusyllinae
The Syllidae - The syllids are a large and diverse group of active worms which are mostly found creeping over sponges, ascidians, hydroids, bryozoa and algae or burrowing in the surface layers of silt and are common in protected sandbanks. They pierce the skin of these sedentary animals and pump out the juice. They are common in shallow water forms, and tend to be numerous on hard substrates and soft-bottom sediments.