With the naked eye, Rushe said the algae ... glow when walking on the wet sand or when you touch the water," they told her. "The light show is only after sunset and must be completely dark.

It can sometimes be seen in warm, shallow bays or lagoons, but some bioluminescent algae can produce toxins harmful to marine life and humans ...

Bangaram beach in Lakshadweep glows in the dark as the water emits a glow at night due to the presence of phytoplankton, algae, and other creatures, such as jellyfish ...

The glow is an indicator of a harmful algal bloom created by something called Noctiluca scintillans, nicknamed Sea Sparkle. It looks like algae and can act like algae. But it’s not quite.