A 21 metre long wooden hippopotamus, HippopoThames, has been spotted in the River Thames off the new quarter of Nine Elms near Battersea in the city’s west. The semi-immersed sculpture, by Dutch artist Florentijn Hofman (famed for his huge yellow Rubber Duck), is part of the month long celebration of London’s river known as Totally Thames and can be seen at the site until 28th September. The sculpture was inspired by the history of the Thames – in particular, the hippos which once inhabited it (in fact, there’s a talk on the subject of the hippos at the Doodle Bar in Battersea tonight – admission charge applies, see www.totallythames.org/events/info/thames-natural-history). Hippopo is moored off Riverside Gardens, Nine Elms Lane, SW8 2DU. For foreshore access times, see www.totallythames.org/events/info/florentijn-hofman. PICTURES: Steve Stills.