The Discovery Channel will broadcast film footage of what is purported to be a sea creature in Alaska that is reminiscent of the famed Loch Ness monster in Scotland.

Filmed by a Bristol Bay fisherman in 2009, the video shows an animal moving through the water, with a long neck, big eyes, horse-like head and bumps that stick out of the water.

The Discovery Channel will broadcast the show on Tuesday night at 9 p.m. as a one-hour special called Alaskan Monster Hunt.

Some experts believe it is genuine.

I am quite impressed with the video, Paul LeBlond, former head of the Department of Earth and Ocean Sciences at the University of British Columbia, told Discovery News.

Although it was shot under rainy circumstances in a bouncy ship, it's very genuine.

LeBlond also said the creature is the least unlike a plesiosaur (a sea reptile that is thought to have disappeared at the end of the Cretaceous Period.)

While skeptics dismiss the creature (claiming it is just a shark or an eel), LeBlond said the creature on the video does not move or swim like a fish.

It must be a mammal or a reptile, since it oscillates up and down in a vertical plain, which eliminates sideways-oscillating fish, he said.

LeBlond added: “These [creatures] don't look like whales...these are large animals, there's a whole family of them, it's swimming up and down, it's probably propelling itself by the flap of its tail, and it's not moving sideways like a fish would.

The Discovery show will be hosted by Deadliest Catch star Andy Hillstrand, who thinks he too has seen the strange creature.

We saw a big, long white thing moving in the water. We chased it for about 20 minutes, he said. Spray came out of its head. It was definitely not a shark. A giant eel may be possible, but eels don't have humps that all move in unison. I've never seen anything like it before.