Lake Michigan turned crystal clear turquoise in April 2015. A Coast Guard helicopter crew spotted something incredible on patrol. Complete century-old shipwrecks sat visible on the lake floor below them. The James McBride was a 121-foot brig that sank in 1857. It rested in 5 to 15 feet of water. Nearby, the Rising Sun wrecked in 1917 with all 32 aboard rescued. The lake holds an estimated 1,500 shipwrecks, and several remain unidentified.
