There's a lake that's a perfect sphere - Apparently.
Lake Enriquillo in the Dominican Republic is a saltwater lake that has maintained a perfect spherical shape over millions of years. This is due to its unique geology, where it is surrounded by a ring of mountains that prevent it from draining, causing the water to be trapped and maintain a consistent, symmetrical shape. According to a 2013 study, the lake's diameter is approximately 77 kilometers, and its shape has been confirmed by satellite imaging and geological surveys.