Long Presumed Dead, a Thriving Coral Reef Is Discovered in West Africa

Summary

Scientists have rediscovered a healthy coral reef off the coast of Benin more than 60 years after surveyors first hinted at its existence. "At least eight coral types and eight fish species have formed a thriving ecosystem on this long-forgotten site," reports Inside Climate News. "What they had captured was a wealth of marine life: six types of soft coral; two black corals; and eight species of sheltering fish, from golden African snappers to the Monrovia doctorfish." From the report: While no coral samples have yet been extracted, researchers have classified the site as a mesophotic coral ecosystem (MCE). Such systems are light-dependent communities existing at the lower limits of reef-building corals. At more than 175 feet below the surface, the coral garden they discovered appears patchily scattered on a rocky substrate. Bridging the gap between shallow reefs and deeper benthic habitats, MCEs are home to distinct species and unique environmental conditions. While scientists are increasingly recognizing their ecological and climatic importance, they remain among the least explored elements of tropical and subtropical marine biodiversity. And this one has real potential to unlock new information about coral history. "Since it's an undisturbed marine ecosystem, it can help through carbon dating or paleoclimatic study to tell us which kind of climate system has occurred here in the past," said [Gerard Zinzindohoue, the project lead for Coral Reefs Rediscovering & Exploration in Benin]. "It's better to know the past to help explain the present, and help know which kind of direction we can take in the future." In addition to the blackbar soldierfish, West African goatfish, and Guinean angelfish filmed darting through the reef, the discovery presents potential conservation claims for other marine life. "We will be advocating for its full protection, perhaps by setting up a marine protected area around it," said [Houangninan Midinoudewa, an oceanographic researcher at t...