The Friends of St. Croix National Park will present Grace Casselberry, a marine ecologist and Ph.D. Student at University of Massachusetts, Amherst, who will be sharing her past research on shark movements and habitat use in and around Buck Island Reef National Monument, including how the sharks responded to Hurricane Maria in 2017. She will also share an update from the ongoing tiger shark expedition, which explores tiger shark movements throughout St. Croix.