Thai conservationists are sleuthing for clues to help save the country’s last herd of dugongs by testing the mammal’s poop for stress hormones, its microbiome and other health indicators to prevent the extinction of this beloved yet critically endangered sea creature. But first they have to find the faeces – a green fist-sized ball consisting of the seagrass the gentle dugongs graze on daily in the coastal shallows of the Andaman Sea. It is literally drop-in-the-ocean work for the teams using...