I think that while the ocean is vast, that doesn’t mean it mixes quickly. If you dump brine, it will stay together as a cloudy salty area for quite a while. No

I think that while the ocean is vast, that doesn’t mean it mixes quickly. If you dump brine, it will stay together as a cloudy salty area for quite a while. No matter where you dump the brine, it will be affecting some ecosystem somewhere. There are videos of divers moving through different strata of salinities in the ocean, sometimes in caves. It looks as though they’re breaching the water-air layer, but they’re actually coming through a water-water layer of different salt densities. So dumping in the ocean will still change a local area of ocean to toxic levels of brine concentration. I’m 100% for desalination, but it’s a tough issue to solve.