Jacques Cousteau played a pivotal role in ocean conservation and exploration, gaining fame for co-developing the Aqua-Lung, which revolutionized scuba diving. His documentaries and films raised awareness about marine ecosystems and environmental challenges, inspiring public interest and support for ocean conservation. Cousteau founded the Cousteau Society, advocating for laws protecting marine life and habitats. His legacy includes promoting sustainable practices and understanding of the ocean’s significance to global health, influencing generations of environmentalists and oceanographers.