The Bear Lake Monster is a cryptid

Cryptid

In cryptozoology and sometimes in cryptobotany, a cryptid is a creature or plant whose existence has been suggested but is unrecognized by scientific consensus and often regarded as highly unlikely. Famous examples include the Yeti in the Himalayas and the Loch Ness Monster in...

 appearing in local folk-lore near Bear Lake

Bear Lake (Idaho-Utah)

Bear Lake is a natural freshwater lake on the Utah-Idaho border in the Western United States. It is the second largest natural freshwater lake in Utah and has been called the "Caribbean of the Rockies" for its unique turquoise-blue color, the result of suspended limestone deposits in the water...

, on the Utah

Utah

Utah is a state in the Western United States. It was the 45th state to join the Union, on January 4, 1896. Approximately 80% of Utah's 2,763,885 people live along the Wasatch Front, centering on Salt Lake City. This leaves vast expanses of the state nearly uninhabited, making the population the...

–Idaho

Idaho

Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....

 border.

The myth originally grew from articles written in the 19th century by Joseph C. Rich, a Mormon colonizer in the area, purporting to report second-hand accounts of sightings of the creature. However, he later recanted the stories.

The Bear Lake Monster has been speculated to be a Basilosaurus Cetoides, however these prehistoric whales did not live in freshwater thus making this impossible. But in the case of Nessie, Plesiosaurs survived in the oceans until the Loch was cut off from oceanic areas, thus making them adapt to freshwater. Also, some say it may be a holdover of Mosasaurus.

Subsequent alleged reports have given conflicting descriptions of the beast, with some describing it as similar to a walrus

Walrus

The walrus is a large flippered marine mammal with a discontinuous circumpolar distribution in the Arctic Ocean and sub-Arctic seas of the Northern Hemisphere. The walrus is the only living species in the Odobenidae family and Odobenus genus. It is subdivided into three subspecies: the Atlantic...

 and others saying that it closely resembles a Sauropterygia

Sauropterygia

Sauropterygia were a group of very successful aquatic reptiles that flourished during the Mesozoic before they became extinct at the end of the era. They were united by a radical adaptation of their shoulder, designed to support powerful flipper strokes...

 and still others describing it as a larger-than-average carp. The last reported sighting of the monster was in 2004.

The Bear Lake monster also appears in Animal Planet

Animal Planet

Animal Planet is an American cable tv specialty channel that launched on October 1, 1996. It is distributed by Discovery Communications. A high-definition simulcast of the channel launched on September 1, 2007.-History:...

's "Lost Tapes

Lost Tapes

Lost Tapes is an American horror/thriller docudrama television series that airs on Animal Planet. Produced by Go Go Luckey Entertainment, the program presents fictional found footage depicting traumatic encounters with cryptozoological creatures , including the Chupacabra and Bigfoot, and even...

," in which it is more similar to a crocodile or a mosasaur

Mosasaur

Mosasaurs are large extinct marine lizards. The first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764...

. Lost Tapes also states that in a legend Pecos Bill

Pecos Bill

Pecos Bill is an American cowboy, apocryphally immortalized in numerous tall tales of the Old West during American westward expansion into the Southwest of Texas, New Mexico, Southern California, and Arizona. Their stories were probably invented into short stories and book by Edward O'Reilly in the...

fought the monster for days until he finally defeated the creature.