Fauna
Invertebrate

Red Whelk

Neptunea antiqua

Also known as Common Neptune, Almond Whelk, Buckie

Reaching impressive sizes across the cold benthic floor of the Northeast Atlantic, the red whelk uses an acute chemical sense to detect animal carrion and burrowing worms from considerable distances. Females deposit distinctive sponge-like mounds of papery egg capsules, from which fully formed crawling juvenile snails emerge rather than free-swimming veliger larvae. Their slow growth and preference for undisturbed seabed substrates leave benthic populations vulnerable to heavy commercial bottom trawling.

MarineCarnivorousBenthic
Red Whelk reference
(c) Jamie O'Neill, some rights reserved (CC BY), uploaded by Jamie O'Neill · cc-by
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyPolychaete Worms, Clams, Fish Carrion
Predators
  • Common Starfish
  • Edible Crab
  • Atlantic Cod
ThreatsBottom trawling damage, dredge bycatch, and marine pollution
HabitatsCold benthic continental shelves, muddy, sandy, and stony seabeds
Life span10–20 years
Classification
  1. FamilyBuccinidae
  2. SpeciesNeptunea antiqua
Range & activity
Range data is not available yet.
Safe observation
Interaction riskHigh
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is high
Salivary glands contain tetramine toxins; never ingest wild sea snails without expert preparation.
Why it is dangerous
Salivary glands contain tetramine, a neurotoxin causing severe headache, dizziness, nausea, and motor ataxia if consumed.
How to recognize a risky encounter
Features a large, heavy, spindle-shaped shell colored cream to pale reddish-yellow with fine spiral ridges.
What to do
Live snails are safe to touch externally; avoid consumption unless salivary glands have been completely excised by an expert.
Responsible observation
  • Beachcombing: Look for empty stranded shells and spongy egg mass clusters along North Sea tidelines.
  • Handling: Hold live specimens gently by the exterior shell to avoid stressing the soft foot.
Related species
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