California is dyeing a lake pink. Here's why:

Above: Bioluminescent waves at a beach in Southern California.

(KTLA) -- A lake in Northern California is getting a dye job, but it's not to improve its aesthetic. No, this makeover will serve an important function.

Researchers from the California Department of Water Resources are dyeing McLeod Lake in downtown Stockton, turning it from its greenish-blue hue to a muted pink.