This is the incredible moment an acrobat flung herself 55ft off the diving board of a moving cruise ship.
Cesilie Carlton is seen limbering atop the platform as the fast-moving vessel moves through the water.
See also: 17 of the best cruise deals for 2017
See also: Top ten off-the-beaten-track cruise holidays
Amazing footage shows the 35-year-old leap off the diving board and perform breathtaking somersaults into the pool underneath.
The impressive jump was filmed by fellow diver Sydney Brown aboard Royal Caribbean's Harmony of the Seas cruise ship, the largest passenger liner in the world.
The clip was shared on Instagram and has since amassed more than 250,000 views.
Sydney said: 'We have the deepest pool at sea, and if the ship is moving from side to side, the water in the pool can spill out.
'If it's unusually rough weather and we lose too much water, we postpone shows - a safety precaution for our divers who are jumping, like Cecile, from as high as 55 feet. This is uncommon though.'
Performers typically stay on the ship for six to nine months at a time, putting on regular shows for their spectators.
Cesilie won the first gold medal for her country at the 2013 World Aquatics Championships, and now travels regularly to compete showcase her skills.