Off Bora-Bora, the life aquatic includes curious lemon sharks. The water is so clear in this stunning slice of French Polynesia that snorkelers can see to the bottom of the lagoon — and its many colorful inhabitants. Water sports are big in this playground for the rich and famous, but because of development and the island’s growing popularity, there are far more jet-powered skis and far fewer schools of brightly hued fish. (Bob Chamberlin / LAT)