Gigantosavra

Gigantosavra
This mythical gigantic lizard like sea creature lived in the Arctic Ocean during the Cold War, when an Aurora was fending off a SM U-27 ship went it slammed the Aurora sinking it into the sea for few seconds until an exploding shattered out of the sea blasting out a 50 feet gigantic lizard into the air and throwing it unconciously into the sea.

But however the gigantic creature was never seen again.