Marathon is a major sport fishing destination, with several charter fishing boats departing from local marinas every morning to both the Gulf of Mexico and the Atlantic Ocean. Bountiful reefs around Marathon make it a popular diving, snorkeling, spearfishing, and lobster tickling area. One of the last untouched tropical hardwood hammocks in the Keys is found at Crane Point Museum, just a few miles west of Florida Keys Marathon Airport. The vicinity of the airport is one of the most reliable sites in the United States to see the hard-to-find Antillean nighthawk. As in the rest of the Keys in summer, gray kingbirds are often seen on telephone wires along US 1 and black-whiskered vireos incessantly sing in the hammocks. Marathon also hosts burrowing owls.