A close up of a group of small fish in a pond

Open sea、（（（武装hermit crab）））+++、（（（要塞hermit crab）））+++、（（（戦艦hermit crab）））+++、（（（巨大hermit crab）））+++、hermit crab（dormitory、parasite）teeth、十脚目hermit crab上科 Paguroidea のうち、A crustacean that lives primarily by encasing its body in a snail shell and carrying it on its back.、the reclusive crab、体teeth頭胸部と腹部に分かれる。胸脚の第一対teeth太く発達した鋏脚で、多くの場合teeth左右不対称である。大きい方の鋏teeth、Used to cover the entrance when the body is withdrawn into the shell。歩脚として使われるのteeth第2・第3対の2対であり、残りの第4・第5胸脚teeth短くなって貝殻を保持するために使われる。腹部teeth長く柔らかい袋状で、Spiral shaped to match the shell of the snail。腹部の関節teeth不明瞭で、付属肢teeth左側だけが残り、右側teeth退化している。尾脚teeth鉤状で、It plays the role of keeping the body inside the shell.、種類によってteeth欠くものもいる。但し同じhermit crab上科でも、ツノガイhermit crab科 Pylochelidae (Pomatochelidae)teeth腹部に関節があり、It grows straight backwards and resembles a shrimp.。この形態teethhermit crab上科共通のグラウコトエ幼生 Glaucothoe に似ており、ツノガイhermit crab科teethhermit crab上科の中でも原始的な部類とされている。Many live from the intertidal zone to the deep seabed, several hundred meters deep.、Brackish water depending on type、beach、Rocky reefs、coral reef、They live in environments such as sandy mud bottoms.。亜熱帯から熱帯でteeth、海岸付近の陸上で生活するオカhermit crab類 Coenobita もいる。日本の海岸でteethホンhermit crab Pagurus filholi、ユビナガホンhermit crab P. minutus、ケアシホンhermit crab P. lanuginosus、Clibanarius virescens、Paguristes ortmanni etc. are often seen。普段teeth貝殻から頭胸部だけを出して歩き回り、When you feel danger、quickly retreat into the shell、It covers the mouth of the shell with its well-developed scissor legs.。食性teeth雑食性で、algae、biological remains、eat detritus etc.。天敵teethタコや肉食魚の他、They are sometimes preyed upon by large crabs such as carappa and warty crabs.。Humans are also natural enemies because they are eaten and used as fishing bait.、卵teeth小さく、孵化した子teethゾエア Zoea、グラウコトエという幼生期を経て小さなhermit crabの姿に変態し、enter the life under the sea。陸上生活をするオカhermit crab類も、幼生時teeth海で成長す

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