The world's only pink Bottlenose dolphin which was discovered in an inland lake in Louisiana, USA, has become such an attraction that conservationists have warned tourists to leave it alone.

Charter boat captain Erik Rue, 42, photographed the animal, which is actually an albino, when he began studying it after the mammal first surfaced in Lake Calcasieu, an inland saltwater estuary, north of the Gulf of Mexico in southwestern USA.

Capt Rue originally saw the dolphin, which also has reddish eyes, swimming with a pod of four other dolphins, with one appearing to be its mother which never left its side.

He said: "I just happened to see a little pod of dolphins, and I noticed one that was a little lighter.

"It was absolutely stunningly pink.

"The mammal is entirely pink from tip to tail and has reddish eyes indicating it's albinism. The skin appears smooth, glossy pink and without flaws.

"Surprisingly, it does not appear to be drastically affected by the environment or sunlight as might be expected considering its condition.

"Albinism is a genetic trait and it unclear as to the type of albinism this animal inherited."