The Last Frontier: We've Only Seen 0.01% of the Oceans' Floor

Send us Fan Mail We've mapped more of Mars than we have of our own ocean floor. Less than 0.001% of the deep seafloor has ever been physically seen by human eyes or cameras — the entire cumulative total would fit inside Rhode Island. In this episode, we explore two urgent, parallel efforts happening right now: the international race to map the seafloor (Seabed 2030, now at 28.7% coverage, up from 6% in 2017) and the rush to document ocean life before species disappear (the Ocean Census, which...