Best photos of August 13: Algal bloom in South Korea to Arbaeen in Iraq

Algae blooms in the Yeongsan river in Naju, 281km south of Seoul, South Korea. EPA
A mural of a gorilla freeing animals on the shutters at London Zoo is the ninth animal-themed artwork by Banksy in nine days to pop up in the UK capital. Getty images
The Perseid meteor shower illuminates ancient statues on Mount Nemrut in south-eastern Turkey. AP
Egyptian Ahmed Elgendy, who won gold in the men's modern pentathlon at the Paris Olympics, holds up his medal at a press conference in Cairo. Getty Images
A solitary diner eats lunch sitting in the Red Stairs Ampitheatre in the central business district of Melbourne, Australia. AFP
Inside the remains of a house destroyed by Israeli forces in Ramallah, in the occupied West Bank. AFP
The Northern Lights, or aurora borealis, fill the sky above The Bathing House in Howick, Northumberland, northern England. PA
A student paints revolutionary motifs over murals linked to the former regime of Sheikh Hasina and her Awami League party, in Dhaka, Bangladesh. AFP
Iraqi Muslim women honour Ruqayyah, the daughter of the Prophet Mohammed's grandson Imam Hussein, as they march from Nasiriyah in Iraq's southern Dhi Qar province towards the holy city of Karbala. AFP