The Best Sight in Gladden Spit and Silk Cayes, The Cayes and Atolls

If you’ve always wanted to dive with the gentle, 60-foot-long whale shark, Gladden Spit is the place. But this is the catch: you have an extremely narrow window in which to do so. The spawning of various snappers—cubera, mutton, and dog—draw the whale sharks here, and that takes place from March through June from the full moon to the last quarter. (Even March can be chancy.) If your schedule coincides, all dive outfitters in the village of Placencia can get you here during these mini-seasons. It means needing to reserve far in advance for a popular excursion that can be offered three—four if you’re lucky—calendar weeks during the year. The other 48–49 weeks, the two pristine, deserted Silk Cayes offer a chance to picnic on their sugar-white beaches and snorkel in their clear-blue waters. Plan on seeing Goliath and Nassau groupers and various sea turtles, but not the whale sharks.