How do we power water desalination in remote locations?

The answer seems so obvious that it feels like a slap in the face. However, this slap in the face is brought to you by your future self living in a better world. According to the Waves to Water American-Made Challenge the energy created by waves can be captured to power their desalination. Imagine a desalination method that is so self-sufficient that you just need to add water. Here’s what American Made Challenges says about the five prize stages:

The prize has five stages, aimed to support concepts through demonstration, with the final stage culminating in an open water testing competition at Jennette’s Pier, where the systems will produce clean water using the power of waves.