Marine reptiles were fascinating creatures that lived in the oceans during the age of dinosaurs. Unlike modern reptiles, they adapted to life in water, developing features like flippers and streamlined bodies. Some well-known marine reptiles include ichthyosaurs and plesiosaurs, which thrived in the seas millions of years ago. These reptiles were not dinosaurs but shared the same era. They came in various shapes and sizes, with some resembling modern-day dolphins and others looking like sea turtles. Marine reptiles played a crucial role in their ecosystems, hunting fish and other marine life, showcasing the diversity of prehistoric life.