Some people seem to think so, and with over 600 sightings of a snake-like creature in Lake Champlain in the past 400 years, a recording has been made which is claimed to prove its existence.
Lake Champlain is a natural freshwater lake that borders New York, Vermont and Canada.
Cryptozoologists Katy Elizabeth and Dennis Hall made the recording using a DolphinEar hydrophone system to monitor echolocation, like that used by dolphins and whales to locate and identify objects around them when navigating or hunting.
Clicking noises were captured on two separate occasions — the first in July and the other in October. However, the two sets of sounds are very different, and Ms Elizabeth is convinced that the first was made by the mystery creature — christened Champ — while she thinks the second could be a beluga whale.
A beluga was spotted in Montreal’s old port, about 100 miles from Lake Champlain, a couple of years ago. Warming seas, Elizabeth tells Motherboard, have changed the areas where animals usually live or feed — plus, although beluga whales live in salt water, they have been known to live in freshwater for a short time. Experts are sceptical of this theory, however.
Elizabeth says she's planning to send the recordings to an authority on cetacean echolocation to see what they make of it. "But I wouldn’t be surprised if they don’t know what it is — that’s the best thing really," she says.