crab.

within 25 miles

Jun 15, 2026

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Coastal Research Volunteers

Contribute to coastal science, stewardship, and resilience

Multiple locations, including yours!

Ongoing

Citizen ScienceAnimalsOcean Water MarineNature & OutdoorsGeology & Earth ScienceEcology & EnvironmentClimate & WeatherBiologyphenologydunesmonitoringbeacheswaterecologycoastbeachgeologycrabamerican eelcoastalsurveyhorseshoe crabdunespawningmusselnew hampshirestewardshipmigrationoysternew englandsandwater monitoringeelrestorationphenological

FWC:FWRI, UF/IFAS, UF Department of Biology, SeaGrant Florida

Florida Horseshoe Crab Watch

Monitor spawning horseshoe crab beaches

Multiple locations, including yours!

Ongoing

Citizen ScienceOcean Water MarineNature & OutdoorsEcology & EnvironmentBiologyAnimalsfloridabeachhorseshoe crabtrainingsurvey

Ghosts of the Coast

Document the formation of ghost forests.

Multiple locations, including yours!

Ongoing

Citizen ScienceOcean Water MarineEducationEcology & Environmentstorymaplow elevationseawatersalt tolerantswampsouth carolinadying forestsaltmarsh migrationnew yorkregenerationgroundwatercedardead treestidal inundationmaritime forestecologytributarieseastern shorevirginianorth carolinariverbanksapfloridawoodmarshsomerset countyghosts of the coastsaltwater marshespinegeologydying treesnew jerseyshorelinekilling treescattus islandeast coastphragmitesmarylanddroughtstormdelawareforestdelaware baywildfiresstumpcoastal ecologyblue crabspartina patenssalinesalt water intrusionmid atlanticgedan labchanging landscapeglobal warmingprime hook national wildlife refugeland conversionsoiltree deathchanging shorelinesurvey123saltwaterfloodingsawgrasssalt stressblack needle rushcoastalchesapeake bayfloodmarineblackwater national refugemullica river estuarybleached treesgeorgiakeryn gedanwetlandstidevirginia coast reservecoastal marine ecologydelmarva peninsulasalt watersaltwater marshclimate changetree stumpsea level risegeographyrising seascordgrasssalt tolerant plantsghost forestthe george washington universitydisturbanceestuarysweet gumhurricanecoastal education

Horseshoe crabs as homes

Discover what species live on horseshoe crabs.

Multiple locations, including yours!

Ongoing

Citizen ScienceEcology & EnvironmentAnimalsNature & OutdoorsOcean Water MarineBiologybeach walkpicturehorseshoe crab

Delaware National Estuarine Research Reserve

Horseshoe Crab Spawning Survey

Monitor horseshoe crab populations in the DE Bay

Dover, DE

Ongoing

Citizen ScienceAnimalsBiologyOcean Water MarineNature & OutdoorsEcology & Environmentdelaware bayhorseshoe crabs

Greater Farallones Association, Pacific Grove Museum of Natural History and the NOAA Office of National Marine Sanctuaries

Long-term Monitoring Program and Experiential Training for Students (LiMPETS)

Provide authentic, hands-on coastal monitoring experiences

Multiple locations, including yours!

Ongoing

Citizen ScienceNature & OutdoorsBiologyGeology & Earth ScienceEcology & EnvironmentOcean Water MarineAnimalsClimate & WeatherEducationinvertebratesalgaesandyrocky shoresrockyoceanin oceansintertidal monitoringteacherssand crabsand crabsintertidaltidepoolstudentsrocky intertidalsandy beachmarine

New Zealand Marine Studies Centre

Marine Metre Squared

Survey the intertidal community in New Zealand.

Multiple locations, including yours!

Ongoing

Citizen ScienceOcean Water MarineNature & OutdoorsEcology & EnvironmentBiologyEducationoceanchitoncitizen sciencenew zealandmarinecrab.quadratintertidalseaweedlimpetrocky shore

Anne Arundel County Recreation and Parks

Mayo Peninsula Parks Horseshoe Crab Counts

Count yearly population of spawning horseshoe crabs at Mayo Peninsula Parks, Anne Arundel County Maryland

Near your search location!

Ongoing

Citizen Sciencefield work marine biology wildlife monitoringwildlife monitoring horseshoe crabhorseshoe crab marinemarinemarine biology

Washington Sea Grant's Crab Team, WSU Extension, and a number of local partners

Molt Search

Monitor invasive European green crabs & native Dungeness crabs

Multiple locations, including yours!

Ongoing

Citizen ScienceNature & OutdoorsEcology & EnvironmentAnimalsandroidwashingtonappbeach walkbeachmonitoringpicturescavenger huntapplecrabinvasive speciesnaturalistoutdoorshorelinemycoastdungenessmarineocean

Cornell University Cooperative Extension of Suffolk County

New York Horseshoe Crab Monitoring Network

Promote conservation of horseshoe crabs in NY State.

Multiple locations, including yours!

Ongoing

Citizen ScienceOcean Water MarineNature & OutdoorsEcology & EnvironmentBiologyAnimalsiphonecitizen-based monitoringmonitorhorseshoe crabmonitoringnew yorkcrab.app

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