What the hell is an Oarfish? While the term may escape laymen, the Oarfish has been well documented by marine biologists for years.It’s not anything too strange, it’s just strange-lookin’. Although, due to their mysterious beachings after storms,and thier tendency to linger on the surface of the sea when they are dying – they are a common source of sea-serpent tales. And boy, do we have a sea-serpent tale today.