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a marine organism that lives in warm waters and forms clusters of polyps, which secrete calcium carbonate to build a hard skeleton
珊瑚, 息肉
a marine creature with eight arms and two longer tentacles and an internal flat shell, which produces an ink-like substance when in danger
墨鱼, 乌贼
a sea creature that has a bell-shaped body, which is gelatinous and transparent, long thin tentacles and a poisonous sting
水母, 胶状海洋生物
a large marine creature like jellyfish that lives in tropical and subtropical waters and has a poisonous sting
葡萄牙战舰, 僧帽水母
a sea creature with eight, long arms and a soft round body with no internal shell
章鱼, 八爪鱼
the microscopic organisms floating in the sea or fresh water on which larger animals feed
浮游生物, 浮游生物体
a small and simple sea creature with a hollow cylindrical body and a ring of tentacles surrounding the mouth
息肉, 刺胞动物
a small marine fish with an upright posture, a horse-like head and a curled tail
海马, 海馬
a marine invertebrate with a body full of holes through which water can circulate and nutrients can be absorbed
海绵, 多孔动物
a marine creature that can change color and has a long soft body with ten tentacles helping it swim very fast
鱿鱼, 乌贼
an echinoderm that has five arms arranged in the form of a star and feeds on mollusks
海星, 小行星
microscopic animals that float in bodies of water, serving as an important food source for many aquatic organisms
浮游动物, 动物性浮游生物
a small marine animal that is covered with spines and has a round shell, harvested for food
海胆, 海刺猬
an invertebrate with a wormlike body that is considered a marine creature and lives on seabed, with tentacles around the mouth
海参, 海黄瓜
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