7 Animals That Have Multiple Hearts

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Octopus

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Octopuses, masters of camouflage, boast three hearts. Two pump blood to the gills, while the third circulates oxygen-rich blood throughout the body, facilitating their remarkable agility.

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Earthworm

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Earthworms, nature's soil engineers, feature five pairs of hearts distributed along their segmented bodies. These hearts pump blood through the worm's circulatory system, aiding in nutrient distribution and waste removal.

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Hagfish

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Hagfish, often dubbed "slime eels," possess four hearts. These primitive marine creatures rely on their multiple hearts to maintain blood flow, supporting their scavenging lifestyle in deep ocean waters.

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Squid

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Squids, swift predators of the sea, have three hearts. Two hearts pump blood to the gills for oxygenation, while the third circulates oxygen-rich blood to the rest of the body, enabling rapid movement and keen hunting skills.

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Cockroach

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Cockroaches, renowned survivors, harbor a decentralized circulatory system with multiple hearts. These resilient insects utilize their hearts to efficiently distribute nutrients and oxygen throughout their bodies, contributing to their adaptability in various environments.

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Salmon

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Salmon, iconic migratory fish, possess two hearts. One heart pumps blood to the gills for oxygenation, while the other propels oxygen-rich blood throughout the body, aiding in their arduous upstream journeys for spawning.

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Blue Whales

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Blue whales, Earth's largest animals, boast a single enormous heart weighing as much as a small car. This massive heart powers their immense bodies, ensuring efficient circulation and oxygenation as they roam the vast oceans.