As divers, we've all seen bioluminescence (or lingulodinium polyedrum to give it it's posh name) but this is still pretty nice to see it whilst taking a walk along the beach at night.
You could almost imagine yourself in Jame Cameron's Avatar film with all the lighting going on here.
"While vacationing on the Maldives Islands, Taiwanese photographer Will Ho
stumbled onto an incredible stretch of beach covered in millions of
bioluminescent phytoplankton. These tiny organisms glow similarly to
fireflies and tend to emit light when stressed, such as when waves crash
or when they are otherwise agitated. While the phenomenon and its
chemical mechanisms have been known for some time, biologists have only
recently began to understand the reasons behind it."