Gaasyendietha, according to Seneca mythology, is a dragon that dwells in the deep areas of rivers and lakes of Canada, especially Lake Ontario.
Not only Gaasyendietha spew fire, it could also cross the heavens on a trail of fire.
The name "Gaasyendietha" was offered by native people to French explorer Jacques Cartier when he inquired about a creature briefly sighted by him and his crew in the St. Lawrence River. They described the creature as "a giant finned snake" that moved like a caterpillar.
Some argue that Gaasyendietha is the product of meteors; others claim that this is a meteor-fire dragon.