The Yachtsman's Naturalist

algae anal fins anchor anemone areas Atlantic Baltic and Mediterranean barnacles beach birds bivalve boat body bottom brittle star brown burrowing carapace cells Channel and Mediterranean Channel and North cm high cm long coastal waters coasts colour crab crustaceans dark diameter dinghy diving dorsal fin eggs English Channel estuaries Extreme lower shore feeding fish gravel green grey inshore islands large numbers larva Length Linnaeus Lower shore marine metres Middle shore molluscs mouth muddy Nests North Sea north-west Europe northern Occurs in estuaries Oceanic offshore pectoral fin Phylum phytoplankton pink plankton plants and animals Plate porcelain crab rocks sand Sea and Baltic Sea and Mediterranean Sea and western seaweeds segments Sexes alike shallow water shell side species specimens spines starfish sublittoral summer surface swimming tail tentacles tide tube feet upper usually VIII weed western Baltic whales winter worm wrack yacht yachtsman yellow zoea zooplankton