Tube-Worm Holes in Ringstead Chalk Boulders 1- Chalk seashore boulder with tube-worm holes that are still occupied by the living worms, most likely Spionid polychaetes of the Polydora genus, at Ringstead Bay in Dorset, England. The limpets attached to the rock give a sense of scale for the worm burrows.
Jessica's Nature Blog 