Sea Creatures 101: Animals of the Abyss: Oarfish: Loch Ness Monster?


© Sharon Rorem
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Most people have heard of the Loch Ness Monster, reported to be living in the body of water called Loch Ness in Scotland. Many people have tried to photograph it or see it firsthand. The first sighting of this creature was more than 60 years ago. The length of the sea creature and its eel-like way of swimming have caused some to wonder if it's a monster at all.

There's no question about the monstrous size. The animal is easily as long as a boat, though its head is small. Could it be a dinosaur, or is it something more common? Some scientists are now considering the possibility that it is an Oarfish. These deep-sea fish are hardly ever seen in shallower waters, and Loch Ness is thought to be 750 feet deep. Oarfish live in the abyssal plain at about 6,000 feet. They can get to be 60 feet in length. Their body resembles an eel, with a top (dorsal) fin that runs the length of the body. This fin undulates, propelling it along the in the water, similar to the movement a snake uses. The only fin this fish uses to swim is the top (dorsal) fin.

The Oarfish may have gotten its name from either the shape of its body or the shape of the spines that jut out from its pelvic fins. The fish uses these spines for navigation. It is often seen swimming vertically in the water, pointing its head straight up. Like many deep-sea creatures, it has large eyes that help it see well in the dark, and "lures" that hang down and off to each side of the fish. These "lures" are ribbon-like and have with a yellow diamond-shaped tip. The bright yellow attracts fish, and the Oarfish can then grab them with its protruding mouth. Pink or red spiny fins extend from its head straight up in an "A" shape. This helps the fish protect itself from predators. Red or pink colorations on a fish are a warning to predators and a type of camouflage. In the ocean, red cannot be seen easily because of the lack of light, and red to a fish that can see it means "danger!"

The Oarfish is a monster of the deep, but is it the Loch Ness Monster? The reason scientists are considering this possibility is because the size, shape, and swimming style of the Oarfish are so similar to accounts of Loch Ness Monster sightings. Oarfish have been found washed-up on beaches, and do sometimes swim closer to the water surface. They are found worldwide in all tropical and temperate waters. About 300 sightings of Oarfish have been recorded. This once-rare fish seems to be making its way into other water systems. There are dozens of Loch Ness Monster sightings every year, and ""South Bay Bessie", a North American sea monster, is reported to be living in Lake Erie's western basin near Huron, Ohio. Lake Okanagan in Vancouver, British Columbia has a sea monster also. The natives named it Ogopogo, after a character in a song.

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