The reef's vacuum cleaners. Eat sand, poop pure sand, evict their organs when threatened.
Sea cucumbers are sausage-shaped echinoderms (cousins of sea stars and urchins) that vacuum sand through their bodies, digest organic matter, and excrete clean sand. They're the reef's continuous sand-processors — vital for coral health.
When stressed, many species 'eviscerate' — expel their internal organs from the anus as a defence/distraction, then regenerate the organs over weeks. Some can liquefy themselves through narrow gaps and reform on the other side.
Over-harvested for the Asian food market (bêche-de-mer), many species are now Vulnerable or Endangered. They're at every Indo-Pacific destination — Andaman, Maldives, Bali — and easy to spot but barely noticed by most divers.
Tap a month to highlight it across destinations, or hover any cell for details.
This species hasn't been logged at any of our partner sites yet — destination + season data will appear here once we've confirmed a reliable spot.
We're still curating destinations where this species can be reliably encountered. Check back soon, or chat with us for a custom itinerary.
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