In 2013, divers started placing simple cinder-block pyramids on a Caribbean seabed

A question that has recently been central to much scientific research across wildlife conservations is: can artificial reef structures eventually help support natural reef recovery? With the rising decline of healthy coral reef structures, entire marine ecosystems are put at risk. Therefore, off the coast of Grenada, a Caribbean island, a conservation project has been searching for an answer to the problem using concrete construction blocks.The Grenada Artificial Reef Project (GARP), founded in 2013 by Dive Grenada, began with four trial pyramids made from concrete blocks, which were installed off Grand Anse Beach. The idea was simple: to create an alternative habitat where marine organisms could eventually settle and grow. With the aim of replicating a reef design without spending a huge amount on more elaborate artificial designs, the project was set in motion, with initial growth of algae and a varied range of invertebrates, such as lobsters, crabs and urchins, being observed within three months.The project's development over the yearsBy January, according to the project’s official data, 100 pyramids had been installed with additional funding from the non-profit Clean Reefs Orga...