Lou Lou is pushing through shoulder-deep water, long blonde locks bobbing and golden legs working overtime in an effort to stay afloat. Suddenly she makes a noise unlike anything I've heard before ...

After a leisurely kayak, guests arrive at a neon blue swimming hole.SUPPLIED / Not-For-Syndication ... Horse Adventures on Espiritu Santo island, Vanuatu. JULIE MILLER / Not-For-Syndication ...