U.S. deep-sea researchers are investigating new reports and viral theories surrounding the Leviathan sea monster a creature rooted in folklore but increasingly discussed after unusual ocean sightings.

These incidents all carry the hushed whispers of a fabled cryptid: sea monsters. Local serpent sightings go back over a century, with the earliest stories dating to the mid-19th century. Lisa Van ...

A cryptid is an animal that some people believe exists but has never been scientifically proven, like the Loch Ness Monster or Chupacabra ... An actual sea serpent, of sorts, did swim in the ...