It wouldn't immediately kill you. The water can be warm (not lethal) but the water is highly basic with a pH of 10. read more
Hygienically, a lake is a bad idea. Pubic hair and labia will keep the bad bacteria in the water of the lake at bay when swimming, but when having sex those bacteria will enter the vagina and cause an uproar. read more
Nonetheless, Lake Natron is home to some endemic algae, invertebrates, and birds. In the slightly less salty water around its margins, some fish can also survive. The lake is the only regular breeding area in East Africa for the 2.5 million lesser flamingoes, whose status of"near threatened" results from their dependence on this one location. read more