Transect 5 comprises a sandy seafloor with shells/shell fragments and gravel. Epifauna are dominated by echinoderms (sea urchins, especially Echinus esculentus, and several species of brittlestar and starfish), with brittlestars especially abundant in places. Where these form beds horse mussels are frequently seen, suggesting that horse mussel bed may underlie the brittlestars. Other species observed include burrowing anemones, whelks, scallops and other bivalves.