From the BBC Springwatch blog: Sound recordist Chris Watson describes how he captured the remarkable sounds of an inner space here at Ynys-hir:

The woodlands around Ynys-hir have been a rich source of sounds for all the films and features I have recorded during this series of Springwatch. However over the past few days as the dawn chorus begins to fade in the tree canopy for this season I’ve been exploring the unique sonic potential of another really special habitat here on the reserve.

Over the past few years I’ve been recording sounds in our sea, oceans and freshwater with hydrophones (underwater microphones) and I was keen to try them in the waters of Cae’r Berllan, the pool and marsh directly in front of the studio. I love the idea of using my hydrophones to ‘fish’ for sounds beneath the surface and for me there’s always a great sense of expectation as I lower these devices into the water as to what I might hear below. (click here to read the rest of the article and listen to the sounds)