Jacques Cousteau's life experiences significantly shaped his contributions to oceanography. His early career as a naval officer during World War II deepened his fascination with the sea. Cousteau's invention of the Aqua-Lung revolutionized scuba diving, allowing greater access to underwater exploration. His commitment to marine conservation grew from witnessing firsthand the impacts of pollution and overfishing on ocean ecosystems. Through documentaries and books, he educated the public on the importance of protecting marine life. His pioneering work established him as a key figure in promoting awareness about the health of the world's oceans.