Horseshoe crab spawning beaches are critical welfare and ecological hotspots where human disturbance and habitat degradation directly harm millions of animals.
Horseshoe crabs that become stranded during spawning face death from desiccation and seagull predation before waves return them to the water. Beach erosion and stabilization with hard surfaces reduces available spawning habitat, concentrating crabs in smaller areas and increasing stranding rates. Foot traffic from beachgoers and vehicles during spawning causes direct crushing mortality and disturbance that disrupts spawning behavior. Volunteer stranding rescue programs that return overturned crabs to the water during spawning season directly prevent deaths on an individual level while providing educational engagement for volunteers.