Best Private Island Shore Excursions

Extreme Getaway Package

If you can't decide which shore excursion to book on Castaway Cay, this package is the island's all-star sampler and lasts for the duration of your entire visit. You get four of the cruise line's excursions in one package, making the combo perfect for families with kids of all ages -- and attention spans -- as well as budget-conscious cruisers. Spread out over a six-hour port call, the excursion equates to less than $15 per person, per hour.

Float in an inner tube, identify all the different species of fish as you snorkel, take a relaxing bike ride on the island's trails and spend some amazing time feeding and swimming with the stingrays. (Editor's note: The stingrays' barbs are cut very short to prevent any injury.)

Horseback Riding by Land & Sea

A tram ride takes you from the Fort San Salvador Welcome Center on Half Moon Cay to the 75-minute excursion's starting point. The guides will give a brief orientation and then cruisers over the age of 10 can claim a horse and start riding.

You'll head to the island's highest point before stopping for an amazing photo op and then ride back down to the bay. The excursion's second stopping point is at the corral, where you'll enjoy a drink, as your horse is "dressed" for swimming. They'll don a specially designed pad, as well as a rope halter that you'll hold on to while riding.

Make a splash as you and your horse enter the water. Once the "sea riding" portion is over, the tram will take you back to the welcome center.

Tip: Wear closed-toe shoes for this one; sandals are not allowed. Also, during the "swimming" part of the ride, the horse will not be wearing a saddle.

Snorkel the Underwater Sculpture Garden

Unlike a lot of snorkeling excursions where you're with a specific group for a designated hour or two, Norwegian Cruise Line allows cruisers on its Great Stirrup Cay to rent their snorkeling equipment for a full seven hours for just $30 per adult (half for kids).

Self-guided and available to all, an underwater sculpture garden in Bertram's Cove features statues of mermaids and fountains as well as real-live schools of fish and marine life and is accessible from shore.

Also, instructors are on hand for a free lesson and to answer your questions. Then you can snorkel at your leisure during your stay on the island. Stop for lunch, before resuming your snorkeling.

Glass-Bottom Boat Cruise

Princess Cays, a 30-acre property near the island of Eleuthera, is home to a pristine coral reef, and a see-through boat is a lovely way to experience the marine life.

Spend an hour or so coasting past the shoreline to mangroves and lagoons rife with colorful fish and natural beauty. This tour is recommended by Discovery at Sea, the cruise line's partnership with the Science Channel.

Thrill Waterpark and Zipline

Royal Caribbean overhauled CocoCay to have so many incredible attractions, it's nearly impossible to enjoy them all in the renamed "perfect day." To make the most of your time -- and money -- buy a pass that includes both the water park and zipline.

In addition to a significant savings over buying each individually, you'll have all-day access to the 13 water slides, wave pool and aquatic obstacle course of the Thrill Waterpark (including the tallest water slide in North America called Daredevil's Peak), as well as the zipline that extends 1,600 feet from end to end.

Dragon's Breath Flight Line

Royal Caribbean excels at ziplines and its course on Labadee upholds that claim. With its starting point at 500 feet above ground and a total length of 2,600 feet, it's the longest zipline in the world positioned above water.

First, expect a quick briefing about the ride and a safety video at Dragon's Breath Rock. Then, hop in a safari vehicle to the top, where you'll climb the stairs to the takeoff point. You'll be fastened in a chair-like swing before you're officially released for a 40- to 50-mph ride. Before you know it, you're back at your starting point at Dragon's Breath Rock.

Placencia Lagoon Wildlife & Mangrove

One of the main attractions of Norwegian's private island in Southern Belize is its breathtaking natural flora and fauna. Experience a guided tour through the lagoons and mangroves of Harvest Caye on a 90-minute educational excursion fit for families.

Sightsee and spot wildlife from a canopied motorboat. When the tour is over, be sure to go for a walk; the port is home to plentiful nature exhibits featuring toucans and other exotic birds -- and most of them are free.