Things to do in london this Bank Holiday.


MARINE CONSERVATION: Today is World Turtle Day. To mark the occasion, London Aquarium has a temporary exhibition of  jellyfish made from plastic bags. The display highlights the dangers plastic bags pose to marine wildlife, killing millions of creatures annually. There’s also a one-off Turtle Workshop today. Included in admission price, prebook at busy times, until 25 May


RETURNING THEATRE: The Animals and Children Took to the Streets returns to the National Theatre for a six-show run. It focuses on the arrival of a woman and her daughter to Bayou Mansions, a seedy tenement block on the fringe of a big city.£15-£25, prebook, until 26 May


ANATOLIA: Anatolian Cultural Festival takes place in Clissold Park, Stoke Newington, and runs for a few days. This free entrance festival includes live performances such as shadow puppet shows, an ottoman marching band, concert and oil wrestling. Free, just turn up, until 26 May


MAMMOTHS: The new exhibition at the Natural History Museum, Mammoths, opens today. See the world’s most complete mammoth, Lyuba, discovered in Siberia in 2007, 42,000 years after she died. Come face to face with life-size models of a sabre-toothed cat and giant short-nosed bear. £10/£8, prebook, until 7 September 


GUIDED WALKCoolTan Arts presents the themed walk War in Walworth, meeting point is Newington Library. Free, just turn up, 12.30pm-3.30pm


SPANISH HISTORY: Javier Cercas, a writer specialising in modern Spanish history will be in conversation with Paul Preston, author of The Spanish Holocaust, at London Review Bookshop. Cercas’ new book, The Outlaws, is set just after the end of Franco’s dictatorship. £10, prebook7pm


LIVE MUSIC: Award-winning singer-songwriter Albert Hammond performs at Jazz Cafe as part of his worldwide Songbook Tour. From £28, prebook7pm


LIVE CABARET: Clissold Arms in East Finchley has a night of cabaret, jazz and blues with renowned cabaret artist Aletia Upstairs and her pianist. Free, just turn up, 8pm


FRIDAY NIGHT SKATE: The London Friday Night Skate is a marshalled street skate open to all rollerbladers and roller skaters able to stop, turn and control their speed on hills. Starts at Wellington Arch at Hyde Park Corner. Free, just turn up, 8pm


CEILIDH NIGHT: The Ceilidh Club returns to Cecil Sharp House for an evening of Scottish dancing. No experience necessary as all dances are called. £18.15, prebook, 8pm


WOMEN’S RIGHTS FILMDocHouse has a screening of The Invisible War at Lexi Cinema in Kensal Rise. The Oscar nominated documentary is about an epidemic of rape and sexual assault within the US military, and is followed by a panel discussion with Lisa Longstaff from Women against Rape, Sharon Hardy is the sister of Anne-Marie Ellement, a Royal Military Police officer who alleged that she had been raped by colleagues, and Emma Norton from human rights organisation Liberty. £7/£5, prebook, 8.45pm


REGGAE NIGHT: Rompa’s Reggae Shack returns to The Waiting Room in Stoke Newington for a night of reggae, dub and ska music. There will be both DJs and live music. Free before 11.30pm, £5 after, just turn up, 10pm