The Seas: Our Knowledge of Life in the Sea and how it is Gained

abundant algæ anemones Atlantic attached become bivalves body borers boring burrow catches caught chapter coasts cockles colour common copepods coral reefs crab creatures crustaceans currents cuttlefish D. P. Wilson deep water deep-sea deeper deposits depth diatoms drifting edible crab eels eggs English Channel fathoms feed feet fish fisheries fishermen growth Gulf Gulf Stream hydroids important inches kinds known land large numbers larvæ light live lobster mass minute molluscs mouth mussel nets North Sea numbers ocean organs oyster particles pearls phosphorescent plaice plankton plants Plate polyps prawns present produced regions rocks round salt sand sea bottom sea cucumbers sea squirts sea urchins sea water shallow water shell shellfish Shipworm shore side skeletons spawning species sponges squid starfish Stream surface waters swimming temperature tentacles text-figure tide tiny trawl tropical usually water layers wave weed whales wood worms young