David Fleetham / Cone shell hermit crab (Ciliopagurus strigatus) inhabiting a cone shell, Hawaii, Pacific Ocean. Crab has a specialized flat body that allows it to squeeze into the narrow opening of the shell.
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Nigel Cattlin / Close up showing the effect of Gibberellic acid (GA, gibberellin), a growth hormone, on the internode length of nodes 2 - 3 in Barley (Hordeum vulgare) crop plants.
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Tony Wu / Feathery prostomial palps (mouth appendages) of Christmas tree worm (Spirobranchus giganteus), Japan, Pacific Ocean.
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Tony Wu / Feathery prostomial palps (mouth appendages) and operculum of Christmas tree worm (Spirobranchus giganteus), Japan, Pacific Ocean.