The Seas: An Introduction to the Study of Life in the Sea

abundant anemones appear Atlantic atoll attached barnacles become bivalves body borers boring burrow catches caught coast colour common copepods coral crab crustaceans currents cuttlefish D. P. Wilson deep deep-sea deposits depth diatoms drift nets drifting edible crab eggs feeding fish fisheries fishermen gills growth Gulf Gulf Stream Heather Angel hydroids known laboratory land large numbers larva larvæ light live lobster luminescent marine animals Mediterranean metres minute molluscs mouth movements mussels nets North Sea numbers ocean organs oyster pearls Photo plaice plankton plants Plate polyps prawns produced reef regions rock round salinity salt sand sea bottom sea squirts sea urchins sea water seaweeds shallow water shell shellfish shipworm shore showing side skeleton snails spawning species sponges squid starfish surface waters swimming temperature tentacles tide trawl tropical usually valves water layers wave weed whale wood worms young