Division 7.11.1

The Sabellaria spinulosa reefs provide an important hard substrate within a predominately soft-sediment environment, which provides unique refuge for certain species. Biogenic reefs increase habitat heterogeneity and offer associated species a surface for attachment (e.g. tubeworms, hydroids, bryozoans, sponges and ascidians), and a place to escape from predation (Bruno & Bertness, 2001.