California dolphins were swimming in "magical" waves with a "beautiful blue glow." Here's what caused it.

Southern California's coast has taken on an unusual appearance in recent days. Every night, the water gets a "beautiful blue glow."

Videos from the coastline show dolphins jumping through glowing waves with boats seemingly emitting the glow as they glide through the water, and people walking through sand with every footstep igniting a neon blue spark.

"Just very awe-inspiring, wondrous. It's magical," Jessica Roame, a whale watching educator at Davey's Locker, a tour agency, told the Associated Press. "People are just — can't believe that this is something that's actually a natural phenomenon."