While humanity has only seen less than 10% of the ocean, our understanding of the ocean continues to improve. According to the recently released second World Ocean Assessment (WOAII), observations have substantially increased due to innovation in sensors and autonomous observation platforms as well as the expansion and improved coordination of regional observation programmes. Photo Credit: @nuno_vasco_rodrigues Nuno Vasco Rodrigues, Portugal, 3rd Place 2022 World Oceans Day Photo Competition, Nature Based Solutions and Ocean Discoveries category A team of scientific divers assess the marine biodiversity on the top of a seamount in Porto Santo, Madeira, Portugal. Marine Protected Areas have been established in the region and local scientists do regular monitoring surveys in order to understand the impact of protection. Source: World Ocean Assessment II, NOAA