Whale watchers have managedto catch video of an all-white orca in the waters off southeast Alaska for the first time.

The killer whale, a young male named Tl'uk, was spotted along with two adults on August 7.

The trio was seen swimming near Kuiu and Kupreanof Islands, which is west of Petersburg, Alaska.

A charter group aboard Alaska Sea Adventures' Northern Song was fortunate enough to encounter the pod.

Tl'uk's pale color made him easy to spot, said Alaska Sea Adventures owner Dennis Rogers.

'When [orcas go] underwater, usually they disappear and typically are very hard to follow,' Rogers said, reported radio station KFSK. 

'But having a white one under the water, you could see him an easy ten feet below the surface, this big white shape moving along there.'

First mate Stephanie Hayes, a graduate student in marine biology at the University of Alaska Fairbanks, captured photographs of the elusive swimmer.