It is incredible the first time you see a fish in the water. Kieran Lieu got to swim with one of the biggest fish in the sea and he is only five years old.
The video starts with the young boy being helped through the water by his mother off the coast of Mexico. As it goes on you see a large fish gliding through the water and realize it is a whale shark, with his huge dorsal fin and gills as big as the child. The mother lets go of her son and he frantically swims towards the shark. He is never quite able to touch the giant fish but he gets to experience the moment of getting so close.
The whale shark is the largest fish in the world but filter feed much like some whale species of that size. They can be found in tropical waters around the world and are listed on the vulnerable species list because they are hunted in the Philipines and some other Asian countries.