Whilst the Thames was once the dirty old river of the Kinks classic Waterloo Sunset, it now seems to be getting cleaned up!
Tighter environmental controls, and stringent rules on cleaner water have seen a colony of seals move in. Of course we wouldn’t recommend drinking the water but a survey carried out by the Zoological Society of London (ZSL), which runs London Zoo, has found there are more than 3,500 seals now living in the Thames estuary – 1,104 harbour seals and 2,406 grey seals.
And life in the revived waterway is so good the seals are breeding too. ZSL counted 138 seal pups in the river in 2018