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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
산호
a marine creature with eight arms and two longer tentacles and an internal flat shell, which produces an ink-like substance when in danger
갑오징어
a sea creature that has a bell-shaped body, which is gelatinous and transparent, long thin tentacles and a poisonous sting
해파리
a large marine creature like jellyfish that lives in tropical and subtropical waters and has a poisonous sting
포르투갈 전함
the microscopic organisms floating in the sea or fresh water on which larger animals feed
플랑크톤
a small and simple sea creature with a hollow cylindrical body and a ring of tentacles surrounding the mouth
폴립
a sea polyp that is predatory and resembles a flower, having bright colors
해양 말미잘
a marine invertebrate with a body full of holes through which water can circulate and nutrients can be absorbed
스폰지
a marine creature that can change color and has a long soft body with ten tentacles helping it swim very fast
오징어
an echinoderm that has five arms arranged in the form of a star and feeds on mollusks
불가사리
microscopic animals that float in bodies of water, serving as an important food source for many aquatic organisms
동물성 플랑크톤
a small marine animal that is covered with spines and has a round shell, harvested for food
바다 성게
an invertebrate with a wormlike body that is considered a marine creature and lives on seabed, with tentacles around the mouth
해삼
