The Great Barrier Reef is the world's largest coral reef system, comprising over 2,900 individual reefs and 900 islands, stretching approximately 2,300 kilometers along the northeastern coast of Australia. Recognized as a UNESCO World Heritage Site in 1981, it is renowned for its exceptional biodiversity and ecological significance.
Ocean life encompasses the diverse array of organisms inhabiting Earth's oceans, ranging from microscopic phytoplankton to the massive blue whale. These marine species occupy various ecological niches across different oceanic zones, contributing significantly to global biodiversity and ecological balance.