Indrid Cold is described as a tall figure with a calm and unsettling presence, wearing a strange outfit reminiscent of an "old-time aviator." Indrid Cold supposedly communicated with witnesses using mind-to-mind telepathy and conveyed a message of peace and harmlessness.
Kusa Kap is a gigantic ancient bird, some 16 to 22 feet in wingspan, whose wings make a noise like a steam engine.
The USS Stein monster incident occurred in November 1978, when an unidentified creature emerged from the sea and damaged the ship.
Antarctica is known for its extreme conditions and unique ecosystem. Studies have shown that animals in cold oceanic regions tend to grow larger than their counterparts in other parts of the world, a phenomenon known as polar gigantism.
The Bondo apes are an isolated population of chimps from the Bili forest in Democratic Republic of Congo.
The mythical Aspidochelone is a fabled sea creature, variously described as a large whale or sea turtle, that is as large as an island.
Some researchers think that Gigantopithecus could be the missing link between apes and humans, while others believe that it could be the evolutionary ancestor of the legendary Bigfoot.
Gremlins were invented by the RAF as mythical creatures who break airplanes, as way to explain random mechanical failures in reports; an "investigation" was even conducted to make sure Gremlins didn't have nazi sympathies.
The sea serpents have been depicted as undulating in the deep water and coiled around ships and boats, putting an end to the life of seafarers.
Chupacabra is arguably America's strangest and most famous enigmatic beast that sucks animal blood.