Fauna
Invertebrate

Colorful Moon Snail

Naticarius canrena

Also known as Colorful Moonsnail, Canrena Moon Snail

Gliding silently beneath coastal sand flats, colorful moon snails are formidable predators that hunt buried clams and other mollusks. They envelope prey within an enormous, fleshy foot, using an acidic secretion paired with a rasping radula to drill a distinctive bevelled borehole directly through the victim's shell. Females bind thousands of eggs into sand and mucus to form stiff, collar-shaped ribbons that frequently wash ashore after storms.

MarinePredatoryBurrowing
Colorful Moon Snail reference1 / 7
(c) FWC Fish and Wildlife Research Institute, some rights reserved (CC BY) · cc-by
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Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyClams, Cockles, Small marine snails
Predators
  • Stingrays
  • Sea stars
  • Crabs
ThreatsCoastal habitat loss, shell collecting, and water pollution
HabitatsSandy bottoms, seagrass beds, and intertidal flats
Life span3–5 years
Classification
  1. FamilyNaticidae
  2. SpeciesNaticarius canrena
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
Responsible observation
  • Observing burrow tracks: Look for gentle raised furrows in damp sand at low tide where they crawl just beneath the surface.
  • Shell etiquette: Always verify that empty-looking shells are truly uninhabited by living snails or hermit crabs before touching.
Related species
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