Kimbles Beach, NJ

By the beginning of the spawning season, each female will have developed about 80,000 eggs, which are located in dense masses near the front of her shell.
She will return to the beach on successive tides, laying 4-5 clutches of eggs with each tide.
Each cluster contains about 4,000 eggs and a female will lay about 20 egg clusters each year.
The Horseshoe Crab ~ http://www.horseshoecrab.org/nh/spawn.html