The Horseshoe Crab has light blue, copper-based blood.
2013 marked the first year the Horseshoe Crab Management Board used the Adaptive Resource Management (ARM) Framework to set horseshoe crab harvest levels for the Delaware Bay area. The ARM Framework, established through Addendum VII (2012), incorporates both shorebird and horseshoe crab abundance levels to set optimized harvest levels for horseshoe crabs of Delaware Bay origin. For the 2016, 2017, and 2018 fishing seasons, harvest in the Delaware Bay area has been limited to 500,000 male horseshoe crabs and zero female horseshoe crabs. This total harvest is allocated among the four states that harvest horseshoe crabs from the Delaware Bay crab population (New Jersey, Delaware, Maryland, and Virginia). The allocation is based upon multiple decision options, including the proportion of horseshoe crabs harvested that originate from Delaware Bay and the allowance for additional male harvest by Virginia and Maryland to compensate for protecting females when the ARM harvest output includes a moratorium on female crabs. Since 2008, New Jersey has had a moratorium on horseshoe crab harvest despite its allocation of the Delaware Bay origin horseshoe crab quota.
Reproduction: Horseshoe Crabs hatch from eggs that the female lays.
Horseshoe Crabs - Delaware & Maryland - Beach-Net
Horseshoe crabs (Limulus polyphemus) are a marine arthropod found along the Atlantic coast from northern Maine to the Yucatan Peninsula and the Gulf of Mexico. The Delaware Bay supports the largest spawning population in the world. Adults either remain in estuaries or migrate to the continental shelf during the winter months. Migrations resume in the spring when the horseshoe crabs move to beach areas to spawn. Juveniles hatch from the beach environment and spend the first two years in nearshore areas.
10 Hard-Shelled Facts About Horseshoe Crabs | Mental …
Once called "Horsefoot Crabs" because of the resemblance of its shell to a horse hoof, the Horseshoe Crab isn't really a crab. Related to scorpions, ticks and land spiders, horseshoe crabs have their own classification (Class Merostomata).