Alton Water Reservoir, 26 June 2025

This underwater recording was made at Alton Water reservoir using hydrophones. The recent hot weather had lowered the level the reservoir, revealing tree roots and fine collection of previously lost tennis balls. I suspended by hydrophones from some low hanging branches so that they were around 30cm from the surface of the water. The clicks of underwater creatures and air being released by plants can clearly be heard. As can the quite unpleasant drone of what I assume is a powered boat that was being repaired some 500 metres away. Towards the end of the recording, a feeding fish came along and created some interesting sounds as it weaved around the tree roots.