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Coral reef tourism generates substantial income for many coastal economies, drawing divers and snorkelers eager to see vividly colored fish and coral formations. This economic value has motivated some governments to designate marine protected areas, restricting fishing and anchoring near popular reef sites to limit physical damage. However, tourism itself can harm reefs: sunscreen chemicals washed off swimmers' skin have been linked to coral bleaching, and careless divers occasionally break fragile coral structures that take decades to regrow. Some resorts now require reef-safe sunscreen and train guides to enforce no-touch policies, while a few destinations have begun capping the number of daily visitors to reduce cumulative stress on fragile reef ecosystems. Researchers argue that without such limits, the very tourism sustaining reef economies could accelerate the reefs' decline.