'Olympic' sand sculptures on display at San Diego competition

Sand sculptors from around the world are competing in San Diego, California at the annual US Sand Sculpting Challenge.

The four-day festival, which began on Friday, has as the theme the run-up for US athletes to the Rio Olympics in 2016.

One of the sculptures features the transgender former Olympian, Caitlyn Jenner, who won gold in the decathlon as Bruce Jenner.