Do you remember how the forest glowed in Avatar? Everyone wanted a similar out-of-world experience, because we were so mesmerized by all the vibrant colors of Pandora. But what most people aren't aware of is that we have the same phenomenon happening in beaches and caves all over the world, and it looks gorgeous!
Bioluminescence is when a living organism naturally produces and emits light. Plankton and other deep-sea dwellers evolved to glow as a way to "startle or distract fish and other potential predators. Some scientists call it the 'burglar alarm effect.'" They eventually eat the predator threatening them.
When the current is too strong or when a paddle hits the waves, the microorganisms are agitated, resulting in these beautiful sea sparkles.