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Coral reef tourism generates substantial income for coastal communities, yet uncontrolled diving and boat traffic can —damagebenefitdamagingdamages the very ecosystems visitors come to see. Sunscreen chemicals washed from swimmers' skin have been shown to —worsenworseningimproveworsened coral bleaching, prompting some resorts to ban certain lotions. Local authorities are now —limitinglimitlimitedlimitation visitor numbers through timed entry permits, aiming to balance economic benefit with long-term reef —survivalsurvivingsurvivesurvivor.