The Bailey-Matthews National Shell Museum & Aquarium will hold a Live Mollusk Count on April 23 at 7:30 p.m. on Sanibel. Participants will be assigned a section of beach to walk and will receive a shell guide to help identify species. They will observe and document sightings of living mollusks. The collected data will be used to help benchmark the health and prevalence of local species on Sanibel. There is no cost to participate, but registration is required. For more information or to register, contact Jorden Falker at jfalker@shellmuseum.org or 239-347-5119.