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Report horseshoe crab spawning sightings with FWC

By Staff | Mar 13, 2019

Spring is peak mating season for horseshoe crabs, and biologists with the Florida Fish and Wildlife Conservation Commission encourage sighting reports with the FWC Reporter application.

Horseshoe crabs mate year-round, and it is most common to see groups along the shore in March and April. To identify mating pairs, look for a smaller male on top of a larger female. Beach-goers will likely have the best luck spotting horseshoe crabs around high tide, within three days of a new or full moon. The full moon is March 21.

These sighting reports provide important information about population distribution to the FWC. Although horseshoe crabs have existed for about 450 million years, little is known about Florida populations. Public sighting information helps FWC researchers target spawning beaches for the Florida Horseshoe Crab Watch Program, a citizen science initiative to collect scientifically accurate data throughout the state.

If you see a horseshoe crab on its back, you can flip it back over by gently picking it up – holding both sides of the shell – turning it over, and releasing it back into the water. Simple actions like this help conserve the species and the many other species that depend on it.

To report sightings, go to MyFWC.com/Contact, then “Horseshoe Crab Nesting Activity” for the “Florida Horseshoe Crab Spawning Beach Survey” link. Or the FWC Reporter app is free to download on Apple or Android smartphones or tablets from the App Store and Google Play.

You can also report sightings at horseshoe@MyFWC.com or 866-252-9326.