a marine organism that lives in warm waters and forms clusters of polyps, which secrete calcium carbonate to build a hard skeleton

산호, 폴립
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, 오징어
a sea creature that has a bell-shaped body, which is gelatinous and transparent, long thin tentacles and a poisonous sting

해파리, 젤리 같은 해양 생물
a large marine creature like jellyfish that lives in tropical and subtropical waters and has a poisonous sting

포르투갈 전함, 포르투갈 해전 생물
a sea creature with eight, long arms and a soft round body with no internal shell

문어, 낙지
the microscopic organisms floating in the sea or fresh water on which larger animals feed

플랑크톤, 플랑크톤 생물
a small and simple sea creature with a hollow cylindrical body and a ring of tentacles surrounding the mouth

폴립, 자포동물
a small marine fish with an upright posture, a horse-like head and a curled tail

해마, 바다말
a marine invertebrate with a body full of holes through which water can circulate and nutrients can be absorbed

스펀지, 해면동물
a marine creature that can change color and has a long soft body with ten tentacles helping it swim very fast

오징어, 문어
an echinoderm that has five arms arranged in the form of a star and feeds on mollusks

불가사리, 소행성
microscopic animals that float in bodies of water, serving as an important food source for many aquatic organisms

동물성 플랑크톤, 조플랑크톤
a small marine animal that is covered with spines and has a round shell, harvested for food

성게, 해삼
an invertebrate with a wormlike body that is considered a marine creature and lives on seabed, with tentacles around the mouth

해삼, 홀로투리아
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