Quiz: What phenomenon causes the water in Lake Michigan to appear December 23, 2024 by Lake Core Editors Desk What phenomenon causes the water in Lake Michigan to appear turquoise in color? Discover more about Michigan Lakes at our Michigan Lake Category. A) The presence of limestone and mineral deposits B) The reflection of the sky on the water surface C) Algal blooms in the summer months D) Underwater vegetation absorbing sunlight Submit Answer See also Quiz: What is the largest town located on the shores of Lake Como?