Be a paleontologist for the day and learn all about fossils found along Calvert Cliffs. Participate in a scavenger hunt filled with fun fossil facts and enjoy a take-home craft that allows you to excavate real fossils from matrix. (ages 4-10). 10am-5pm, Calvert Marine Museum, Solomons, $9 w/discounts, RSVP: www.calvertmarinemuseum.com.