The hippo and the tortoise

Following the devastating tsunami of 2004, a baby hippo named Owen was rescued from the sea off the coast of Kenya.

He was taken to Haller Park in Mombasa, home of a 130-year-old giant tortoise called Mzee.

Owen and Mzee formed an unusual friendship and their story gained worldwide fame.

Dr Paula Kahumbu tells their story to Gill Kearsley.

(Photo: Owen and Mzee. Credit: Peter Greste/AFP/Getty Images)