What does a kestrel make of the dog sniffing in the long grass below? Why does an exhausted salmon pause before a weir? How will an otter experience the rumble of a passing train?

Eighteen people have spent six weeks swimming, slithering and soaring as otters, salmon, earthworms, red deer and kestrels in an attempt to better document the risks for wild animals in our human-dominated landscape.

The volunteers were trained to experience distinctive animal “umwelts” and report back on the reality of being a non-human animal trying to survive around the River Tone in Somerset, England.