The Sea Shore: With 61 Colour Photos. by D. P. Wilson and Others, 62 Black-and-white Photos. and 88 Text Figures |
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Page 20
... tentacles are withdrawn while the animal elongates and becomes ringed with annular constrictions . These finally break through , thus cutting off a series of eight - lobed discs , which , as young jellyfish , swim away . The whole ...
... tentacles are withdrawn while the animal elongates and becomes ringed with annular constrictions . These finally break through , thus cutting off a series of eight - lobed discs , which , as young jellyfish , swim away . The whole ...
Page 82
... tentacles are ready to seize and close over any small animal , even a small shore fish , that comes within range . On the surface of the stout column , the commonest of the little sea - spiders , Pycnogonum littorale ( Fig . 5 , p . 25 ) ...
... tentacles are ready to seize and close over any small animal , even a small shore fish , that comes within range . On the surface of the stout column , the commonest of the little sea - spiders , Pycnogonum littorale ( Fig . 5 , p . 25 ) ...
Page 83
... tentacles and , especially in early life , a longer and thinner column is the daisy - anemone , Cereus pedunculatus , first described by Thomas Pennant . In general the colour is grey or brown with a variable pattern of lighter coloured ...
... tentacles and , especially in early life , a longer and thinner column is the daisy - anemone , Cereus pedunculatus , first described by Thomas Pennant . In general the colour is grey or brown with a variable pattern of lighter coloured ...
Contents
INTRODUCTION | 1 |
THE DISCOVERY OF THE SEA SHORE | 7 |
THE INHABITANTS OF THE SHORE | 15 |
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acorn-barnacle algae amphipod anemones animals and plants Ascophyllum attached balanoides barnacles bivalves body bottom British burrow byssus Chthamalus coasts cockles colour common common periwinkle commonest crabs crustaceans D. P. Wilson dog-whelks eggs encrusting estuaries exposed exposure extend fauna feeding fish foot fresh water fronds Fucus gills grow growth habit hydroids inches long inhabitants intertidal isopod jellyfish Laminaria larger larvae limpets live low tide low water marine molluscs mouth movement muscles mussels nature numbers oyster periwinkles Photographed under water plankton polyzoans population prawns protection ragworms razor-shells red weeds region rock pools rocky shores rough periwinkle rounded salinity sand sandy shores sea-squirts seaweeds shallow shell valves shelter shipworms shore animals shown in Plate shrimps siphons snails spawning species spines sponges spring tides squat lobsters starfish sub-littoral sub-littoral zone surface swimming temperature tentacles tidal tide marks top-shells tube tube-worms usually wide worms wrack young