The best dive operation in Guánica is Sea Venture Dive Copamarina (tel. 787/821-0505, ext. 729), part of the Copamarina Beach Resort. Copamarina has a long pier where fishing is permitted and a 42-foot (12.6m) Pro Jet dive boat. Guánica is one of the Caribbean's best areas for day and night dives. A two-tank dive costs $95, with full diving equipment. You can also rent snorkeling gear. Whale-watching excursions can be arranged from January to March at the hotel's tour desk, which also offers ecotours, kayaking, deep-sea fishing, and sunset sails. Horseback riding and sunset biking are also available.

At one of the local beaches, Playa Santa, west of town, Pino's Boat & Water Fun (tel. 787/821-6864) will rent you a paddleboat or kayak for $18 to $20 an hour.

One of the most visited sites is Gilligan's Island, a series of mangrove and sand cays near the Caña Gorda peninsula. Part of the dry forest reserve, it is set aside for recreational use. A small ferry departs from in front of Restaurant San Jacinto, just past Copamarina Beach Resort, every hour daily from 10am to 5pm, weather permitting; round-trips cost $5.

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.