Zakynthos @ The World’s Clearest Waters

Silky, powder-white sand seems to get all the attention these days—but what good is perfect sand without crystal-clear water to match? Like sand, not all bodies of water are created equal: due to certain natural filters like coral reefs or limestone, some oceans (and lakes, and rivers) simply look better than others. Here, we’ve rounded up the world’s bluest waters for your summer travel inspiration.