For the second time this year, an oarfish has washed up on a California beach. The 'doomsday fish' is considered a harbinger of doom in Japanese folklore.

A rare deep-sea oarfish, also called a sea serpent, washed ashore near San Diego in Encinitas, and Scripps scientists are unsure what happened.

SAN DIEGO ( KUSI) — Another oarfish has made its way from the deep sea to the coast of San Diego County in Southern California. Scripps Institution of Oceanography researchers stumbled upon the rare fish, considered the largest vertebrate in the world’s oceans, at Grandview Beach in Encinitas last week.

Two dead oarfish have washed ashore in Southern California waters in the last few months. One was spotted in August and the other just last week.