Once every voyage, there comes a time when everyday life onboard the My World Odyssey grinds to a halt and students come together to test their mettle in a mental, physical, and emotional contest. That’s right: for Spring 2017, it’s time for Sea Olympics.

Before reaching South Africa, voyagers rallied behind their respective seas and pitted themselves against one another in grueling athletic events like synchronized swimming, lip-sync battles, and much more. This year, the Adriatic Sea won the cup, the glory, and the bragging rights—but everyone had fun. Take a look at the photos below to see the finely-tuned athletes at work.