Calabash Eco Adventures. This tour company, run by a Grand Bahama local and avid diver, Shamie Rolle, offers a variety of eco-excursions to areas all over Grand Bahama for sport, history, and education. Options include kayaking, snorkeling, birding, bicycling, and cavern diving into some of the island's famous inland blue holes. All tours include pickup and drop-off at your lodging. Grand Bahama Island. 242/727--1974; www.calabashecoadventures.com.

Grand Bahama Nature Tours. One of the most well-known ecotour operators on the island for more than 20 years, Grand Bahama Nature tours is continually updating and adding to their wide variety of excursions, run mostly by Grand Bahama natives who are both entertaining and full of educational information. Popular adventures include snorkeling around Peterson Cay, kayaking through the mangroves at Lucayan National Park, jeep safaris, off-road ATV tours, and birding through the Garden of the Groves. All tour prices include air-conditioned pickups at your lodging and any necessary equipment. A zip line is in the works. Grand Bahama Island. 242/373–2485; 866/440–4542; www.grandbahamanaturetours.com.