I had always imagined, since the moment we booked the flights to Hawaii, that I’d get the chance swim with a sea turtle. But I thought it was pipe-dream. The odds of finding a sea turtle, let alone swim with one, were slim to none. Even as we gathered our bags from the baggage carousel at the airport, I was holding out hope that all the turtle memorabilia found in the gift shops weren’t going to be the only ones I’d see on the trip. And some times, you don’t need to spend hundreds of dollars on an excursion or …