How do scientists measure and sample the depths of the ocean without a submersible? Spoiler alert, it's not by using trained giant squids. Today, is National CTD Appreciation Day and we are proud to highlight this amazing instrument and the oceanographic data it collects. https://t.co/UqsyUwPsQD NOAA Atlantic Oceanographic and Meteorological Lab Climate Change Science on Telegram by @ClimateChangeScience A @grttme project - Other backups: @Hallotme