Photo highlights of the day

Visitors tour the new "Dreamy Blue" pavilion of Qingdao Underwater World, an aquarium in Qingdao, China. Photograph: Xinhua/Landov/Barcroft Media

A sheep peers from behind another sheep during a protest by shepherds outside local government offices in Potsdam, Germany. Photograph: Sean Gallup/Getty Images

Ukrainian Interior Ministry security forces, blocked by pro-Russian activists, gather outside the regional government headquarters in Luhansk, eastern Ukraine. Photograph: Vasily Fedosenko/Reuters

A general view as runners clear a flight of hurdles at Punchestown racecourse in Naas, Ireland. This image was processed using digital filters Photograph: Alan Crowhurst/Getty Images

A mother carries her children away from their house that is on fire in a residential slum area in Manila, Philippines. Photograph: Dennis M. Sabangan/EPA

Jasmine Smith views floral tributes outside Corpus Christi Catholic College in Leeds following the stabbing yesterday of teacher Anne Maguire. Photograph: Christopher Furlong/Getty Images

Model Jenny Bishop poses next to the Duchess of Cornwall's wedding dress on display in the Wedding Dresses 1775-2014 exhibition at the Victoria and Albert Museum in London. Photograph: Matthew Lloyd/Getty Images

An elephant grabs the hat of his mahout during a training show for the public at Singapore zoo. Photograph: Simon Tong/Barcroft India

Protesters clash with anti-riot police as they attempt to march towards the U.S. Embassy during the visit of Barack Obama. Photograph: George Calvelo/Barcroft India

Polling officials collect Electronic Voting Machines from a Government distribution booth at Howrah stadium on the eve of third phase of general election in Bengal, India Photograph: Piyal Adhikary/EPA

Getting nowhere fast: an angry commuter remonstrates with Union members outside London Bridge underground station during the 48-hour tube strike. Photograph: Matthew Aslett/Demotix/Corbis

A massive wedge tornado bears down on the city of Tupelo, Mississippi. Storms across the southern and central US have left at least 19 people dead. Photograph: Daniel Shaw/Demotix/Corbis

A flag sticks out the window of a damaged hot rod car in Vilonia, Arkansas. For more images of the storms see our gallery. Photograph: Carlo Allegri/reuters

Starry, starry night: stars are seen over Gaza in this long exposure image. Photograph: Mohammed Shurrab/Pacific/Barcroft Media

A woman throws rocks at riot policemen who block her way home in Huepetuhe, Peru. Soldiers have begun destroying illegal gold mining machinery and have enforced a ban on illegal mining. Photograph: Rodrigo Abd/AP

Transgender Indian election candidate Hijra Guru Baseer Kinnar aka Kamala Kinnar speaks to a resident while campaigning in a Muslim neighbourhood of Varanasi, India. The transgender leader is running against BJP leader Narendra Modi in the district. India's court issued a landmark ruling in recent weeks recognizing transgenders as a third official gender under law. Photograph: Kevin Frayer/Getty Images