Living on an island surrounded by large volumes of sea water, I believe that we can explore whether the possibility of under water currents which run around our islands can be a source of energy. We know that marine currents can carry large amounts of energy and this can easily occur in straits between islands and the mainland. It is not believed that marine energy technologies will replace gas or petroleum but could become an asset in producing clean energy. I am confident that we can identify sites around our islands which generate potential underwater currents. There are a number of papers published on this subject: https://royalsocietypublishing.org/doi/10.1098/rsta.2012.0500 https://pmiind.com/marine-energy-conversion/