A finely told, beautifully illustrated biography that saves a world class scientist from obscurity. School Library Journal, starred review, An ideal introduction to a lesser-known scientist and an important understanding about how the Earth works. Kirkus Reviews, starred review Filled with gorgeous illustrations by acclaimed artist Raul Colon, this illustrated biography shares the story of female scientist, Marie Tharp, a pioneering woman scientist and the first person to ever successfully map the ocean floor. Marie Tharp was always fascinated by the ocean. Taught to think big by her father who was a mapmaker, Marie wanted to do something no one had ever done before. map the bottom of the Atlantic Ocean. Was it even possible Not sure if she would succeed, Marie decided to give it a try. Throughout history, others had tried and failed to measure the depths of the oceans. Sailors lowered weighted ropes to take measurements. Even today, scientists are trying to measure the depth by using echo sounder machines to track how long it would take a sound wave sent from a ship to the sea floor to come back. But for Marie, it was like piecing together an immense jigsaw puzzle.