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Horseshoe Crabs

Denise Garcia

Created on November 18, 2024

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MyFWC

MyFWC Florida Fish and Wildlife

fwcresearch or myfwc

Florida Horseshoe Crab Watch

Living Fossils

Horseshoe Crabs

Mangrove horseshoe crab (Carcinoscorpius rotundicauda)

Indian horseshoe crab (Tachypleus gigas)

Japanese horseshoe crab (Tachypleus tridentatus)

American horseshoe crab (Limulus polyphemus)

  • Volunteer with the program
  • Report sightings of horseshoe crabs on iNaturalist
  • Report a tagged horseshoe crab
  • Flip horseshoe crabs over to prevent them from drying out
  • Support efforts of coastal restoration

Florida horseshoe crab watch program

  • Serve as bait
  • Blood serves as a clotting agent, tests for bacteria and pathogens
  • The three Asian species are listed as critically endangered
  • Not enough data to estimate population size or status of the populations in Florida
  • Depend on intertidal beaches for spawning (Reproduction)
  • Highly susceptible to shoreline erosion, shoreline armoring, and development

4 Species

Importance