Which marine animals are capable of regenerating their internal organs?

Stingrays
79
Cuttlefish
85
Sea cucumber
537
Duck mussel,
138
In the event of danger, sea cucumber ejects their internal organs covered with toxic and sticky secretions and regenerates them within a few days. Sea cucumber resemble the size of a large cucumber, and are among the echinoderms.
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Tschuka
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