It’s grotesque because this isn’t sand: it’s just the bones of dead fish.
The Salton Sea was created on accident in 1905 when an irrigation canal from the Colorado River broke. A lake formed from the resulting spillover. Because this man-made, accidental lake now has no inlet or outlet, it’s leeching salt from the surrounding soil. It’s 30% saltier than the Pacific Ocean.
Note: don’t swim in the Salton Sea or walk on the beach. Make sure you let people know by sharing this gallery, even if you ruin a few vacations.