ZSL #005: The state of the Thames

Since being declared 'biologically dead' in 1958, the River Thames is now considered a global conservation success story of a recovering urban estuary. Monni talks to guests working on a range of conservation projects by researchers and citizen scientists in the heart of London, including juvenile fish surveys, seal counts and 'outflow safaris'. Find out more about the diverse range of species now living in the Thames' muddy waters.