The mysterious creature often called the “doomsday fish” is actually the oarfish — a rare, deep-sea species that has fascinated sailors, scientists, and storytellers for centuries. Known for its enormous length and ribbon-like body, the oarfish is surrounded by both scientific curiosity and ancient superstition.
Oarfish Overview
| Feature | Details |
|---|---|
| Scientific Name | Regalecus glesne (Giant Oarfish) |
| Common Names | Oarfish, Giant Oarfish, Ribbonfish, King of Herrings, Doomsday Fish |
| Size | The world’s longest bony fish, commonly reaching 9 meters (30 feet); unverified reports suggest lengths up to 17 meters (56 feet) and weights around 270 kg (600 lbs). |
| Appearance | Long, ribbon-like body, silver in color, with a flowing red or pink dorsal fin and a crown-like crest on its head. |
| Habitat | Found in the mesopelagic zone (the “twilight zone”) at depths of 200–1,000 meters (660–3,300 feet). |
| Diet | Filter-feeds on krill, plankton, and small crustaceans. Completely harmless to humans. |
| Movement | Propels itself by undulating its dorsal fin and is often seen swimming vertically, head-up. |
The “Doomsday Fish” Legend
The oarfish earned its ominous nickname from Japanese folklore, which portrays it as a messenger from the Sea God’s palace (Ryūgū no tsukai). According to legend, these creatures rise from the deep to warn humans of impending earthquakes or tsunamis.
Why the Myth Persisted
- Cultural Significance: In Japan, seeing an oarfish near the surface has long been viewed as a bad omen.
- The 2011 Coincidence: Before the 2011 Tōhoku earthquake and tsunami, several oarfish were found washed ashore in Japan — reinforcing the myth for many.
- Sea Monster Origins: Their enormous, snake-like form likely inspired ancient tales of sea serpents spotted by sailors.
What Science Says
Marine biologists have a more grounded explanation:
- Injury or Illness: Oarfish found near the surface are usually sick or dying.
- Environmental Stress: Strong currents, temperature shifts, or mild underwater tremors can disorient them.
- No Proven Link: There is no scientific evidence connecting oarfish appearances to earthquakes.
The Truth Behind the Mystery
The oarfish remains one of the ocean’s most elusive and awe-inspiring creatures — proof that the deep sea still holds secrets that blur the line between myth and reality. Whether seen as an omen or simply a deep-sea marvel, the “doomsday fish” continues to capture human imagination like few others.