Our freshwater fish populations play a vital role in maintaining the health of our ecosystem, but they exist in a perilous state with over one third of species facing extinction.

Narrated by Joanna Lumley, this visually stunning documentary captures hope amid environmental uncertainty.

Through candid interviews with leading experts, the intricate relationship between beavers and migratory fish is unpacked – revealing the opportunities beavers create and the unique challenges they introduce in our freshwater ecosystems.