More than 175 feet below the surface, researchers have now classified Benin’s newly rediscovered coral garden as a mesophotic coral ecosystem, confirming it as a light-dependent reef at the lower limit of coral growth.
The patchy reef sits on rocky substrate between shallow reefs and deeper seafloor habitats, a zone scientists say is poorly explored but important for biodiversity, climate records and coral history.
Gerard Zinzindohoue said the undisturbed site could support carbon-dating and paleoclimate work, helping reconstruct past climate systems in the Gulf of Guinea.
Houangninan Midinoudewa said the team will seek full protection, including a possible marine protected area, while also applying for Important Shark and Ray Area status with IUCN.
The find builds on the rediscovery of a reef long presumed dead since the 1960s and could spur more locally led marine research across West Africa’s underserved waters.
If a reef presumed dead for 60 years is thriving, what other lost ocean worlds could modern drones uncover?
This 'dead' reef was a 60-year-old mistake. What other scientific 'facts' about our planet need to be re-examined?
As global reefs bleach, what is the secret to this deep-water ecosystem's success off the coast of Benin?
Presumed Dead, a 7-Kilometer Coral Reef off Benin Springs Back to Life: Implications for West African Marine Science
Overview
Marine scientists have confirmed the rediscovery of living coral communities off the coast of Benin, West Africa, a reef system that was first reported in the 1960s but later presumed dead and left unstudied for decades. This breakthrough was made possible by recent exploratory surveys using advanced techniques like side-scan sonar mapping and underwater video exploration. The findings sparked excitement and disbelief among researchers, especially for lead author Gérard Zinzindohoué, who had long suspected the reef’s existence. This discovery not only revives scientific interest in the region but also highlights the power of modern technology in uncovering hidden marine ecosystems.