![](http://www.alamy.com/thumbs/6/73355186-501C-42F0-8106-AA22C836F2E8/E41FGR.jpg)
Atlantic horseshoe crab, Limulus polyphemus, marine chelicerate arthropod, breeding, Delaware bay, Delaware
Size: 5759px × 3840px
Photo credit: © John Cancalosi / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ancient, beach, breeding, congregation, high, invertebrate, mating, ocean, primitive, reproduction, sand, sea, tide