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Mussie is an alleged sea monster reported to be living in Muskrat Lake, 75 miles (121 km) northwest of Ottawa, Ontario, the capital of Canada. The legend has gone through a gradual image change over the years.

It has not been decided if Mussie is a single creature or an entire species. Those who believe it is is just one creature, often are stumped by its possible gender or appearance in general.


In the past the creature was called "hepaxalor", after witness Donald Humphreys said the name “popped into his head”, and described as a great serpent with three eyes and sharp teeth that towered over its potential prey. Some say its got two horse-like ears on top its head, with an extra ear in-between, pointing backward like a reverse unicorn horn. However, the interest of several "Mussie enthusiasts" of various professional grades has helped to organize witness accounts and streamline the modern perception of Mussie that appears less exaggerated. It is now most popularly imagined as an unknown type of marine mammal, sharing traits with a seal or walrus.


Local folklore says that while exploring the region over 300 years ago, Samuel de Champlain learned from the natives of the area of a legendary creature that lived in the lake. Though the legend may certainly descend from native lore, no mention is given of it in Champlain's memoirs. Nevertheless, the myth survived with help from a sign which once welcomed visitors to Cobden.

The sign featured Champlain holding his famous lost astrolabe while looking out over Muskrat Lake. In the lake, prominently displayed, is Mussie, depicted as having three eyes and a long tongue. The sign is inaccurate in many ways, least of all in giving the impression that Champlain had actually encountered the creature. Though the sign has been replaced, its impact is still felt. Champlain is still the traditional starting point for any Mussie tale.


Muskrat Lake, like many other lakes, was formed when the glaciers of the last ice age receded about 10,000 years ago. At that point it was part of the Champlain Sea. Owing to glacial recession the sea was repeatedly diluted, its salt levels rising and falling over the years making it brackish (partly salty and partly fresh). About 6,000 years ago the water level dropped and the Champlain Sea disappeared. This would have been the last chance for any potential sea monster to arrive in the lake. Three species of shrimp from the ice age have been found in the lake, giving rise to claims that more substantial species may have survived in deeper parts of the lake.

In the mid-1990s Mussie was made the focal point of a Cobden/Ottawa Valley marketing campaign. Flags, windsocks and signs sprung up all around Cobden and the entire Ottawa Valley.

There was talk of offering a $1,000,000 prize for Mussie's capture; the plan never saw fulfillment. But every year, visitors in the area do often try to search for it, no one has yet captured evidence of its existence.


Author Michael Bradley theorizes that Mussie may be a type of freshwater pygmy walrus, similar to the seals in Seal Lake, Quebec. Eyewitness accounts support this theory with descriptions of slick, silver-grey fur and long white teeth or tusks. In 1988 Bradley conducted a sonar survey of Muskrat Lake in an attempt to find evidence of Mussie's existence. He failed to find anything substantial, though he did capture a sonar image of two creatures, 6-8 feet (1.8 to 2.45 meters) long, at a depth of 24 feet (7.3 m). Bradley notes that these creatures seemed to be undulating vertically. According to Bradley this is remarkable because only two types of creature undulate vertically, invertebrates and marine mammals. The problem with this is that marine mammals need open water in the winter to survive. The closest source of open water is at the mouth of the Saint Lawrence River.


In the game Persona 2: Eternal Punishment, Mussie appears as an optional boss. Mussie Persona 2