Jacob’s Well is one of the longest underwater caves in Texas. It’s basically a spring-fed pool that is made by the thousands of gallons of water per minute that surge up into the well. The well acts as headwaters to Cypress
Senegal's Lake Retba, or as the French refer to it Lac Rose: harmless halophilic bacteria make the water pink. Lake Retba has a high salt content, much like that of the Dead Sea, allowing people to float effortlessly in the massive pink water.