Where the reefs begin to level off to form the seabed or give way to a boulder-strewn or gravelly seabed. In some years the grotesque anglerfish is common in around 15m of water. It is a master of disguise as it lays in wait for its prey waving its lure in front of its mouth. When open the mouth is enormous and an anglerfish is capable of swallowing fish up to its own size.

In deeper water, where the reef meets gravel you will come across some fine examples of large anemones like the colourful Dahlia anemone or the more rare, but less striking, deeplet sea anemone. In some areas brittle stars, with their small disc-like bodies and long, thin, legs, totally dominate the seabed. Present in their thousands, they form an eerie writhing carpet, each animal with an arm or two sticking up to catch food suspended in the water.