Country diary: the pond is a hive of activity

Sandy, Bedfordshire: I lean forward and the skater darts away in a series of fitful starts. A water measurer beneath my gaze stays put at the pond's edge

A pond skater's feet feel prey landing on the drumskin-tight surface of the water. Just how can this skater skate on thin "ice" while a fly the size of its eye falls through? Though the fly tries to drag its legs free, surface tension binds it to a sheet of elastic glue.

I lean forward and the skater darts away in a series of fitful starts. A water measurer beneath my gaze stays put at the pond's edge. An aquatic stick insect, Hydrometra stagnorum could easily be mistaken for a strand of dark human hair. My eyes are just a handspan away, so I can observe the detail of alternating light and dark strips along its abdomen, which remind me of a ruler. However, it gets its name from the way it walks over the surface with a measured tread.