A school of fish is not the same as a crowd. The former follows the randomness of currents, while the latter responds to a precise cue—if one can interpret it. Atop an undersea mountain, researchers observed nearly 2.8 million eels massed in the same spot. A spectacle that no one can really explain yet.
- About 3,500 tonnes of eels, or roughly 2.8 million individuals, were found gathered in a single underwater spot.
- The phenomenon was observed at the summit of Patience Seamount, an undersea mountain, during a 2007 survey conducted by CSIRO’s RV Southern Surveyor-1.
- Scientists currently have no confirmed explanation for why this massive gathering of basketwork eels occurs.
- 3,500 tonnes of eels hidden on the ocean floor
- Patience Seamount, the mysterious gathering of basketwork eels
- A scientific enigma that no one can solve
3,500 tonnes of eels hidden on the ocean floor
Credit: © CSIRO
The figure deserves attention. The team counted roughly 3,500 tonnes of eels concentrated in one underwater site. A substantial mass, yet in the form of living, writhing flesh.
Converted to the number of individuals, this equates to about 2.8 million eels gathered at the same moment in the same place. A density rarely observed in a species that typically lives in the depths, dispersed rather than clustered.
Such a concentration inevitably raises questions. In the marine world, a gathering of this kind prompts inquiries into its causes. It remains to be seen what drives these animals to converge toward a single point on the ocean floor.
Patience Seamount, the mysterious gathering of basketwork eels
The scene unfolds on a stage with a rather poetic name: Patience Seamount, an underwater mountain. It is above this rise that basketwork eels were observed swimming en masse just above the sediment.
The image that documented the phenomenon came from a 2007 survey conducted by the RV Southern Surveyor-1, an oceanographic vessel operated by CSIRO, the Australian scientific agency.
The basketwork eels do not seem to wander there by chance. They appear in large numbers above this sunken summit, a behavior that remains unexplained for now.
A scientific enigma that no one can solve
Herein lies the core challenge: no one yet knows why these eels specifically choose this site to gather in such large numbers. What is observable confirms the phenomenon, but not its origin.
When faced with such a mystery, caution is warranted. It would be tempting to craft a ready-made explanation, but given current knowledge, no precise cause has been confirmed. Researchers therefore prefer to acknowledge the unknown rather than speculate without evidence.
This ambiguity does not diminish the significance of the discovery; quite the opposite. A clearly marked collective behavior in a typically discreet species deserves time and resources to uncover its meaning.
The question remains whether future explorations will someday reveal what draws millions of eels to the same sunken summit. In the meantime, Patience Seamount keeps its secret, tucked between two waters, far from prying eyes.
