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Cone snail

Cone snails are a group of marine gastropod molluscs in the family Conidae.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Cone snails are a group of marine gastropod molluscs in the family Conidae. They are predatory and highly venomous, and many species live in tropical and subtropical oceans, especially in reef habitats. Their venom is delivered using a specialized harpoon-like tooth.

Description

Cone snails are sea snails with characteristic conical shells and a specialized venom apparatus. They are a diverse group of marine gastropods within the family Conidae.

Distribution and habitat

Cone snails are found in tropical and subtropical seas worldwide, with high diversity in the Indo-Pacific region. Many species live in shallow reef habitats, sandy bottoms, or near coral reefs.

Feeding and venom

Cone snails are active predators that use a harpoon-like tooth from the radula to inject venom into prey. Depending on the species, they may target marine worms, molluscs, or fish.

Human interactions

Some cone snails can sting humans, usually when handled or stepped on. A few species, especially the geography cone and textile cone, are considered medically significant because their venom can be lethal.

Biomedical research

Cone-snail venoms contain many bioactive compounds called conotoxins. These compounds are studied for their ability to target specific nerve receptors and for possible pain-management applications.

Key facts

  • Cone snails are predatory marine gastropods in the family Conidae.
  • They use a harpoon-like radular tooth to inject venom into prey.
  • Many species inhabit tropical and subtropical reef environments.
  • Some species can be dangerous to humans, with reported fatalities.
  • Their venoms contain conotoxins studied for biomedical and pain-relief research.
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Canadian context

Cone snails are not native to Canada’s cold waters, but Canadian aquarium enthusiasts, beachgoers travelling abroad, and biomedical researchers may encounter them as a marine venom and natural-products topic.

Frequently asked questions

What is a cone snail?
A cone snail is a predatory marine gastropod mollusc in the family Conidae, known for its conical shell and venomous hunting method.
Are cone snails dangerous to people?
Some species are dangerous. Stings can cause severe pain or be fatal, and several human deaths have been reported from certain species.
How do cone snails catch prey?
They use a modified radular tooth like a harpoon to inject venom into prey.
Where do cone snails live?
They occur in tropical and subtropical seas worldwide, especially in reef and shallow-water habitats.
What do cone snails eat?
Cone snails prey on marine worms, molluscs, and in some species fish.

References

  1. Wikipedia — https://en.wikipedia.org/wiki/Cone_snail
    Supports: General definition of cone snails as highly venomous sea snails in the family Conidae.
  2. ScienceDirect Topics — https://www.sciencedirect.com/topics/pharmacology-toxicology-and-pharmaceutical-science/conidae
    Supports: Taxonomy, venomous nature, and conotoxins.
  3. National Geographic — https://www.nationalgeographic.com/animals/invertebrates/facts/geography-cone
    Supports: Danger to humans, venom delivery, and biomedical research interest.
  4. Nova Southeastern University — https://libguides.nova.edu/shellidentification/cones
    Supports: Identification, habitat, feeding, and venom apparatus.
  5. Aquarium of the Pacific — https://www.aquariumofpacific.org/onlinelearningcenter/species/cone_snails_general_description
    Supports: Venom, hunting method, habitats, and human encounters.
  6. Animal Diversity Web — https://animaldiversity.org/accounts/Conus/
    Supports: Distribution of the genus Conus in tropical waters.