What is an oarfish? Why is the oarfish called the apocalypse fish?

The oarfish (Regalecus glesne), commonly known as the 'Doomsday Fish,' has been the subject of legend for its rare sightings before earthquakes and tsunamis. While folklore has led people to believe this, scientific research has yet to reach a definitive conclusion.

Recent oarfish sightings in Mexico and other locations raise questions about climate change, seismic activity, and shifting deep-sea ecosystems. Let's take a closer look at the oarfish and why it's being called the apocalypse fish!

What is a paddlefish?

Oarfish are rarely seen by humans due to their deep-sea habitat. They are considered to be one of the longest bony fish, with a ribbon-like body that allows them to float seamlessly through the water column. Here is an overview of the main characteristics of oarfish:

Why is the oarfish called the doomsday fish?

The eerie nickname " Doomsday Fish " stems from many cultural legends that associate oarfish sightings with impending natural disasters.

The Reason Behind the Legend

1. Earthquake Connection: In Japan & the Philippines, oarfish are considered harbingers of earthquakes and tsunamis. Prior to the 2011 earthquake in Japan, 20 oarfish were reportedly washed ashore. This information further solidifies this belief.
2. Rare Surface Sightings: Because oarfish live in deep-sea environments, their appearance near the surface is unusual and is often associated with illness or disorientation. This rarity has contributed to superstition.
3. Ancient Legends: Oarfish, due to their strange size and shape, may have inspired ancient sea monster myths. The undulating swimming motion of oarfish adds to their mysterious aura.

While oarfish remain a mystery of the deep, their rarity and unique characteristics have led to enduring legends. Whether or not oarfish truly predicted the disaster, their existence highlights the need for humanity to protect our oceans. By reducing plastic waste and supporting conservation initiatives, we can ensure that deep-sea species like oarfish continue to thrive in their mysterious underwater world.

Marvin Fry

Update 26 May 2025