Invertebrate
Florida Stone Crab
Menippe mercenariaAlso known as Stone Crab
Florida stone crabs are heavy-bodied coastal decapod crustaceans famous for disproportionately massive, black-tipped claws capable of crushing tough mollusk shells. They excavate burrows up to a meter deep beneath sea grass flats, oyster bars, and rocky crevices, defending these shelters fiercely from rivals. When threatened or captured by fishers, they can drop their claws via reflex autotomy, eventually regenerating a fully functional replacement claw across successive molts.
MarineBenthicCrustacean
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & preyEastern Oyster, Hard Clam, Marsh Periwinkle
Predators
- Loggerhead Sea Turtle
- Common Octopus
- Blacktip Shark
ThreatsCommercial overharvesting, water pollution, coastal habitat destruction, and red tide blooms
HabitatsSalt marshes, seagrass meadows, oyster reefs, and nearshore rocky rubble
Life span7–9 years
Classification
- OrderDecapoda
- FamilyMenippidae
- GenusMenippe
- SpeciesMenippe mercenaria
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Immense claw crushing power can break fingers; never handle live individuals with bare hands.
- Why it is dangerous
- The larger crusher claw generates tremendous mechanical pressure capable of easily crushing human bones, lacerating skin, and severing fingers.
- How to recognize a risky encounter
- Look for a smooth, heavy brownish-red carapace with unequal, outsized claws ending in distinct glossy black tips.
- What to do
- Do not attempt to pick up live adults from the wild; observe them from a safe distance in the water or across the shoreline.
Responsible observation
- Snorkeling Observation: Look inside undercut limestone ledges or oyster beds where their dark claws often protrude.
- Handling Precaution: Keep clear of the chelae, as their crushing force exceeds thousands of pounds per square inch.
- Fishery Awareness: Observe local seasonal regulations that require harvesting only one legal-sized claw before releasing the crab.
Prey Unknown / CC-BY · cc-by
Predator "Loggerhead Sea Turtle (Caretta caretta)" by brian.gratwicke is licensed under CC BY 2.0. To view a copy of this license, visit https://creativecommons.org/licenses/by/2.0/. · cc-by
Competitor Wikimedia Commons / CC BY-SA 3.0 · cc-by-sa
Image unavailableClose Relative
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