Swimming with sharks in Fakarava

The three of us were lying face down at the end of a rickety wooden dock at the south pass to the Fakarava lagoon. We were looking into the amazingly clear waters and counting the number of sharks we could see - 1,2,3,4,5,6,7. Its not the most natural instinct to jump into the domain of a predator with so many teeth but we had been advised that it was perfectly safe so in we jumped. The sharks mostly black tip, white tip and grey reef sharks kept their distance but occasionally one would come for a closer look. I now understand why fish can see behind them. We spent about a hour in the waters with the menacing looking creatures which in reality were not interested in us, well not these ones anyway.