What is the effect humans have had on coral reefs?

Humans have significantly harmed coral reefs through pollution, overfishing, and climate change. Runoff from agriculture and urban areas introduces harmful chemicals and sediments, while overfishing disrupts the delicate balance of reef ecosystems. Additionally, rising sea temperatures and ocean acidification due to climate change lead to coral bleaching and weakened coral structures. These impacts threaten biodiversity and the livelihoods of communities dependent on healthy reef systems.