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オウムガイの触手は、目に付きやすい38本と口の周囲にある24本、両目の前後に1本ずつで計66本。メスは口器の下側に卵を産み付けるヘラ状の特殊な器官を持ち、その先端に24本の触手があるので計90本。
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Feeding time at the aquarium, Nautilus belauensis
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Parasitic crustacean, Dendrogaster tobasuii found on the starfish, Mediaster brachiatus. from Kumanonada-sea, Japan. Depth of 300m. #Crustmas
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Carcinoecium-forming Epizoanthus, E. xenomorphoideus
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年報が出た！新称和名が カガミモチウニとなりました。Prionechinus forbesianus is distributed in the south of Honshu, Japan, at depths more than 260 m. Two individuals overlapped vertically was observed in the aquarium.The upper specimens were always male and the lower were female.
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The mouth of the seaurchin, Asthenosoma ijimai
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Bathynomus Omu-rice !(omelette stuffed with rice)
