A deep-sea shapeSourced
A sea cucumber with a jellyfish-like veil
Pelagothuria natatrix is a sea cucumber with an umbrella-like swimming structure. Its translucent body has pale purple pigmentation and resembles a jellyfish. Its movement is largely a slightly controlled drift rather than powerful swimming.
A sea cucumber need not look like an animal crawling along the seabed.
Summary / translation: Unbubly · CC BY-SA 4.0
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Pelagothuria · Wikimedia contributors
Adapted, summarized and translated from the source. Adapted text is also available under CC BY-SA 4.0.
Reviewed: 2026-10-10