The most amazing photos of the Rio Olympics come from a small army of scuba-diving robots

The Olympics, particularly the summer Olympics, are a kind of festival for elite sports photography.

There's no two weeks in the year that produce a heftier haul of world-class images of athletic competition.

All the major agencies covering the games fight for an edge in the photographic shoot-out. And this year, Getty added a new weapon to its arsenal: a small army of underwater robots.

Here's what you need to know about them, along with some of the amazing images they've created.