More fishing about in our new pond. This is a Culex sp. mosquito pupa, sometimes nicknamed a 'tumbler'. Good name as despite being in their final resting stage before adulthood, they still zip about at speed, spinning in tight spirals. It will spend 1-4 days like this, depending on conditions, before hatching and resting on the water's surface to harden, and for the wings to straighten and dry.
100mm65mm7DCulicidaeMPE65canonculexdeepcuteos7df2.8insectlarvamacromosquitopondpupapupal stagesurreysurrey heathwater