7 Heartless Animals

Sea Cucumber

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Tapeworms

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Sea Urchins

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Starfish

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Hydra

[{"selector":"#anim-b091e95e-04ec-43da-b5c9-7fc0f7a91a81","keyframes":{"opacity":[0,1]},"delay":1400,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Oxygen and nutrients are absorbed directly from the surrounding water through diffusion in hydra.

Sponges

[{"selector":"#anim-bcc08d3a-f04d-4d26-a5c3-03314c91427a","keyframes":{"opacity":[0,1]},"delay":1400,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Heartless like jellyfish, sponges utilize water flow to obtain nutrients and oxygen.

Flatworms

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