It’ssixo’clockinthemorning.You’restandingonadockofasmallfishingvillageinthePhilippines.Themaninchargegoesovertherules.Notouching.Noriding.Noflashphotography.Nosunscreen.Keepatleast5 meters(16feet)awayfromthe sharks.

Yougrabamaskandsnorkel.Youputonyourlifejacketandjointheothertourists.Youhopaboardalarge,thincanoe.Thecaptainpaddlesoutfromshore,leadingalineof canoes.

Theboatcaptainstosshandfulsofshrimpsfrombucketsintothesea.Soonyouseewhatyou’vebeenhopingfor.Youseethem.Thebiggestfishintheocean—whale sharks.