Marine light pollution
Two million square kilometres of the world's oceans and 22% of coastlines are exposed to light pollution from offshore infrastructure and coastal towns and cities together they form artificial skyglow that can expand the impact of light pollution to hundreds of kilometres offshore.
Artificial light at night (ALAN) is of growing concern as a pollutant to our seas. It disrupts the natural patterns and biological processes of marine life, including those that support critical ecosystem services. This includes animals' ability to see their environment to hunt, hide, communicate, navigate, grow, time important events and reproduce.
The impacts of light pollution on the night sky, astronomy and land-based ecosystems are well studied but until just over 10 years ago, the full extent of ALAN in our coastal waters, seas and oceans was unknown.