Zuiderdam

A small-group trip into the only tropical rainforest in the U.S. National Forest system to hike, swim in river pools and ride a natural rock waterslide.

Glide along San Juan's coast with an underwater jet scooter, looking for sea turtles on the reef. Videos of your swim are included, and it takes about 90 minutes.

See the colorful streets, forts and city walls of Old San Juan by golf cart, covering more ground than on foot, just steps from the cruise pier.

Sail on a comfortable catamaran to swim with sea turtles in calm, clear water, then relax at a white-sand beach before heading back to the ship.

A three-hour walk through historic Charlotte Amalie tasting West Indian dishes and local rum, with the story of the island's Danish colonial past along the way.

Ride a guided off-road route through the hills of St. Thomas for big views over the harbor and neighboring islands. About two hours, so it fits an easy port day.

Head straight from the pier to one of Tortola's beautiful beaches, such as Cane Garden Bay, for a few hours of swimming and sun.

A boat ride to The Baths on Virgin Gorda, where giant granite boulders form grottoes and tidal pools along a white-sand beach. One of the most famous sights in the Caribbean.

A private guided hike through Tortola's hillside forest to ruins of an old windmill and sweeping views over the islands.

A fast boat ride around the island to snorkel with turtles and tropical fish, then beach time and lunch on a small island off the coast. One of the most-booked tours in St. Maarten.

Drive your own off-roader over the hills and coast roads, ending at Maho Beach, where jets land just over your head. Built around cruise ship times.

A private guide shows you both the Dutch and French sides of the island: Philipsburg, Marigot, Orient Bay and the best lookouts, at your own pace.

Circle all of Antigua by speedboat, stopping to snorkel, swim at Stingray City and see Devil's Bridge and the island's quiet bays from the water.

A guided drive to the island's highlights, including Nelson's Dockyard, the view from Shirley Heights and some of Antigua's famous beaches.

Zip around Antigua in an open-air tuk-tuk, through the rainforest and on to a couple of beaches, for a fun, laid-back half day.

St. Lucia's most-booked tour: drive through villages and rainforest to Soufriere and the Pitons, see the drive-in volcano, then cruise back along the coast.

A two-hour ATV ride over hills and through banana plantations with sweeping island views.

Soak in the warm volcanic mud baths at Sulphur Springs, then rinse off at a waterfall in the rainforest. A perfect 5-star rating from hundreds of travelers.

Swim through the narrow Titou Gorge, soak in natural hot springs, then snorkel at Champagne Reef, where volcanic bubbles rise from the sea floor.

Head out from Roseau to look for the sperm whales and dolphins that live off Dominica's coast year-round.

Cook a Creole meal with a local host using island produce and spices, then sit down to enjoy it together.

Barbados' most-booked trip: sail the west coast, swim with sea turtles, snorkel over shipwrecks in Carlisle Bay, and enjoy lunch and drinks on board.

Ride an electric tram deep into Harrison's Cave to see crystal-clear streams, waterfalls and huge stalactites.

A full-day drive from the calm west coast beaches to the wild Atlantic shore at Bathsheba, with stops at the island's best lookouts and landmarks.

Discover the Spice Isle: swim at Concord Waterfall, see how Grenada's chocolate is made, taste local rum and visit the Grand Etang crater lake.

Float down a rainforest river on a tube, with stops at Annandale Falls and Grand Etang lake.

Snorkel among the famous underwater sculptures at Moliniere Bay and over a nearby reef on a four-hour boat trip.

A small-group boat trip to snorkel two spots in Bonaire's protected marine park, famous for some of the healthiest reefs in the Caribbean.

Race across the flat island on a three-wheeled landsailer powered by Bonaire's steady trade winds. A one-of-a-kind activity with a perfect 5-star rating.

See both ends of Bonaire in three hours: flamingos, salt pans, slave huts and the wild northern coast, with a local guide.

Aruba's most-reviewed tour: drive off-road along the rugged north coast to a hidden beach and a natural cave pool for a swim.

An easy bus tour to the classic sights, including the California Lighthouse, Casibari rock formations, the Alto Vista chapel and the north coast.

Sail along Aruba's calm west coast to snorkel at a shipwreck and coral reef, with lunch and drinks served on board.

Snorkel alongside wild sea turtles, then relax at Grote Knip, one of Curacao's prettiest beaches. Underwater photos are included.

A small-group day covering Curacao's best: colorful Willemstad, the island's countryside, beaches and lookouts.

Take the wheel of an off-road buggy on dirt trails around Willemstad, with a stop to cool off at the beach.

Three adventures in one day: swim in the Blue Hole, ride a horse along the trails, and float down a jungle river on a tube.

Glide down a calm river on a bamboo raft with a local captain, and enjoy a traditional limestone foot massage along the way.

A private half-day tour of Montego Bay with a friendly local guide, covering the town's sights and time at the beach.