DescriptionHemichordata Unko 20080703.JPG 日本語: 半索動物門の排泄物。河口などの流れが緩やかな浅瀬の砂の上にモンブランのような物体がある。 Date 2008/07/03 Source 青森県青森市合浦公園 Author あおもりくま（Aomorikuma）...
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