"No. 25: Plaza Sur, Galapagos Islands
The Galápagos Islands hold many wonders, but few are as charming as the clowns of the sea, the Galápagos sea lions. From the town of Puerto Ayora on the main island of Santa Cruz, take a boat ride to Plaza Sur, home to over a thousand sea lions. Jump off the boat into the shallow water and you'll be an instant hit with the juveniles, who like to swim up for a closer look. The adults are more wary: Mothers stay back, keeping a watchful eye on their young, while bull males may occasionally give you a warning "bark" underwater if you get too close. Otherwise, consider yourself the life of the party as the playful creatures perform swirling acrobatics in your honor."