By Arwa Damon, CNN
Donsol, Philippines (CNN) -- "Welcome to Donsol, the home of the gentle giants," Alan Amanse says smiling broadly at as we awkwardly scramble on to the traditional fishing boat.
"We have something must be followed; the rules about whale shark interaction".
He's delivered this speech countless times, but says he never tires of seeing newcomers eager faces. Donsol in the province of Sorsogon, Philippines, was once a sleepy fishing village, now it buzzes with excited tourists who flock here for what many later describe as a life changing experience -- swimming with the largest fish in the ocean, the whale shark.
I have to admit, I was filled with childish excitement I hadn't experienced in years.
"If I say 'Ok, let's rock and roll', its time to get in the water; that's my magic word, 'rock and roll'," Alan tells us, perched on the edge of the boat, a devilish twinkle in his eyes.
