Coral reefs at Ofu, American Samoa
![An underwater/overwater photo of coral reefs at Ofu, American Samoa](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/G0160771-2.jpg?itok=3efFYb33)
Detailed Description
Coral reefs at Ofu, American Samoa, where USGS researchers are studying coral resilience to rising sea-surface temperatures, as well as the influence that submarine groundwater discharge may have on coral reef health.
Sources/Usage
Public Domain.