Giant Caribbean Anemone

Identification overview

The giant Caribbean anemone, Condylactis gigantea, is a fleshy marine animal with long, tapering tentacles arranged around a central mouth. Contrasting tentacle tips can appear pink, purple, blue or green, but colors vary. The anchored base and extended tentacles create the flowerlike appearance; the animal is not a plant.

South Florida habitat

Species accounts place it in southern Florida and the Keys, including shallow reef, lagoon and seagrass-associated settings where a firm attachment surface is available. These are regional range statements, not a verified Upper Keys or Key Largo occurrence. The Key West reproductive study supports biology at its Lower Keys study location; it does not establish a northern range boundary or a sighting elsewhere.

The attachment site is an important part of the observation. Look at where the base disappears into the substrate without lifting, pulling or probing around it. Several anemones near one another are separate individuals rather than one colonial coral structure.

Feeding

Tentacles contain stinging cells used to capture animal prey and bring it toward the mouth. A feeding animal is best watched from a respectful distance. Do not offer food, touch the tentacles to test their response or place a small animal onto the anemone for a photograph.

Reproduction

A primary study of sea anemones from Key West found separate male and female Condylactis gigantea. It described egg production followed by a planktonic larval stage supported by yolk reserves. That is different from the reproductive strategies of some other anemones, so a general statement that all anemones divide into clones would be inappropriate here.

The study supports the basic developmental pattern, not a guaranteed spawning event on a particular dive. Sex and reproductive condition cannot be reliably inferred from a casual photograph of tentacle color.

Identification cautions

Long tentacles with colored tips are useful clues but do not replace comparison with a confirmed reference. Record the full tentacle arrangement, visible body and habitat when possible. This profile omits a numerical maximum because one reviewed secondary account gives inconsistent dimensions; that uncertainty is preferable to a misleading size claim.

Protected observation

FWC’s recreational marine-life rules explicitly prohibit harvest of Condylactis gigantea. Leave the animal attached and undisturbed. The restriction is not lifted because a specimen looks abundant, occurs outside a particular reef or would fit in an aquarium.

Maintain buoyancy, keep fins and equipment away from the animal and avoid bracing against its surroundings. A useful encounter leaves both the anemone and its attachment habitat intact. Current official rules should always be consulted, but this species’ prohibition must not be diluted into a generic “check before collecting” statement.

References

• Species biology reference
• FWC species information
• Primary study abstract: Sea-anemone reproduction at Key West

Current Florida collection cautions

Reviewed November 12, 2026. FWC explicitly prohibits harvest of the giant anemone Condylactis gigantea. Leave the animal attached and undisturbed; aquarium use, apparent abundance or a general marine-life bag limit does not create an exception. Do not touch its tentacles or remove its attachment substrate. This identification page gives no permission to harvest and no assurance of safe consumption. Official FWC anemone harvest prohibition

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