August 14, 2025npj Ocean SustainabilityOpen Access

COVID-19 anthropause affects coral reef ecosystems through biophysical changes

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SARS-CoV-2 increased water clarity and altered endangered Hawaiian monk seals' behavior.
Water clarity improved due to reduced human visitation, demonstrating a shift towards natural ecological conditions.
Observational study in Hanauma Bay assessed changes in reef fish densities and herbivore grazing activity.
Findings suggest that balancing tourism and coral reef conservation is crucial to preserving these ecosystems.

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Observation shows changes in coral reefs due to reduced human activity, highlighting essential ecological balances.

Madin et al. (2025) studied this question.

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