Satellite view: NASA / ​ The Visible Earth (http: / / ​ visibleearth.nasa.gov /); reef: © Dirscherl Reinhard / ​ age fotostock
Satellite view: NASA / ​ The Visible Earth (http: / / ​ visibleearth.nasa.gov /); reef: © Dirscherl Reinhard / ​ age fotostock