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National Geographic : 1936 Aug
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THE NATIONAL GEOGRAPHIC MAGAZINE © National Geographic Society Painted by Else Bostelmann under direction Roy W. Miner TROPICAL SPONGES OF BATHROOM USE HAVE RELATIVES IN NORTHERN WATERS But they have no commercial value. Through pores water is sucked in and food filtered out. Waste water is then ejected through a chimneylike opening, the osculum. Most sponges are made up of many individuals welded together. Common in New England tidal pools is the CRUMB-OF-BREAD SPONGE (upper background). Near it is a pink EYED FINGER SPONGE. Waving weirdly below is a pale DEAD MAN'S-FINGERS SPONGE. Brilliant REDBEARDS frequent the shallows, and yellow SULPHURS (left) cling to stones. Tube-shaped sponges grow on dead mussels (foreground). VIII
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