Underneath the 43-foot skeleton of a juvenile sperm whale, visitors to the Nantucket Whaling Museum can absorb the danger and excitement of a 19th-century whaling voyage at the daily “Whale Hunt” presentation. Museum interpreters, using video, photos, and historical artifacts, explain Nantucket’s role as the “whaling capital of the world” and demonstrate how this tiny island bred some of the bravest and bloodthirstiest mariners in American history. Storytellers delve deeper into a particularly dark incident in Nantucket’s history in another program, “Essex Gam” (“gam” means a talk or chat in whaler-ese). This true tale of a long-ago shipwreck inspired Herman Melville’s epic, Moby-Dick. Both highly recommended programs are free with museum admission.