Photograph of the sea bed on Rockall Bank between 135 and 165 m depth. The picture area is about 1 square metre, and all the fish are lesser silver smelts (argentina sphyraena). (Blacker, 1982)

fig. 15 Fine coral sand with a few small pebbles. Two Brittle-stars (ophiuroid) can be seen;
fig. 16 Fine coral sand and pebbles;
fig. 17 Sand and stones. The stones support a fauna of sponges and other animals;
fig. 18 Rock and stones. Small colonies of coral and sponges are growing on the rocks.