HorseShoe Crab Presentation by the Friends of National Wildlife Refuge — Monday, June 11, 10:00 am. Can you tell the difference between a female and a male horseshoe crab? If you find this crab on the beach, do you know if it died or is it just a molt, a shed outer shell? MaryKay Fox, President of the Friends of Mashpee National Wildlife Refuge Organization, will share her knowledge on this elusive animal and will share pictures of her work, describe its natural history and bring you up-to-date on its regulations. Please Rsvp to the Mashpee Senior Center, (508) 539-1440, or stop by the front desk to sign up. For more information, please contact our Activity Coordinator, Susanne Murphy, at (508) 539-1440, x3512.