There was an In Our Time about plankton recently, where one of the guests talked about the Continuous Plankton Recorder, a tool using silk to trap plankton for

There was an In Our Time about plankton recently, where one of the guests talked about the Continuous Plankton Recorder, a tool using silk to trap plankton for research that was created in the 1920s and has been in continuous use since then. The housing for the silk is dragged behind boats in various places, taking cross sections of the plankton along a route. https://hakaimagazine.com/news/the-antique-technology-still-taking-the-oceans-pulse/ https://hakaimagazine.com/news/the-antique-technology-still-... https://www.bbc.co.uk/programmes/m001r1t5 https://www.bbc.co.uk/programmes/m001r1t5