Thames Estuary Conservation
In the last 30 years, the Thames Estuary has become one of the world's most unpolluted metropolitan tideways, but its rich variety of wildlife remains a well kept secret.
Commercially important fish species such as Dover sole and sea bass use the Thames as spawning and nursery ground. The estuary's mud flats provide essential feeding grounds for internationally important migrant bird populations and ZSL's research has confirmed that dolphins, porpoises and seals are all regular visitors to the Thames.
ZSL has a number of Thames Estuary Projects, falling under the Marine and Freshwater conservation programme, that study the Thames and its diverse ecology.These include finding out about the mammals using the Thames, monitoring fish populations and keeping an eye on invasive species.
Thames Marine Mammals
The Thames is visited by several marine mammals and we are closely monitoring them through our public marine mammal survey. We are also the first port of call for cetacean strandings. Read more
Monitoring Thames Fish
ZSL is monitoring the fish populations in the Thames as part of a long term collaborative project. We want to know how pollution is affecting them and whether there are any new visitors to the river. Read more
Conserving European Eels
ZSL has been working to conserve the European eel population in the Thames for over 10 years. Most of our research is focused on the elver migration upstream and why recruitment has declined. Read more
Invasive species are one of the biggest threats to native wildlife. Every November, the weir at Richmond Lock is lifted to expose the river bed and ZSL uses this opportunity to scout the river bed. Read more