I was already aware of that solution, but thank you. It has a number of drawbacks, the most significant being capital-to-throughput. Check how expensive it would be to provide 11 Trillion gallons of water with the solution you offered - because that's how much water we need, just in California's drought. Oneka says their modules pump 10 tons a day - they'll need half a Billion such modules for California to eliminate the drought in 6 years. As I mentioned in my article, the capital requirements for evaporator-yarn are many times lower than reverse osmosis filters, which is what Oneka relies upon.

Further, Oneka's water would still need pumps and pipes to take it to peoples' homes. More capital expense and operating costs, energy demands in particular! Just pumping that water to the Central Valley, where the farms are located, would need an extra megajoule per ton - would that pump station power come from waves, too? And, for the volume of water that California needs, it is actually wrong to say "it's free energy" - depleting gigawatts from wave action has consequences, too.

So, while a design *can* tap-into ambient wave power, as a cute branding technique of "using waves to desalinate", the actual engineers are going to tell you to just use solar for your desalination - it's easier to maintain, install, more mature and higher power density. There's literally NO actual reason to use wave-power to desalinate - it's just a gimmick. Solar concentration is superior, and renewable, and you co-generate multiple value-streams with it: you bring-in more sea breeze for your evaporators, due to concentrator's convection; you can grow crops beneath the reflectors, using wrinkly Mylar; reflected sunlight is *not* heating the ground, so surface temperatures are lower, water loss from soil drops.

The reason wave power is still not in use, while solar is everywhere, is because solar is actually just better as a source of power, regardless of what you use it for... so, desal with solar, too.