"Imagine you are below the shark, the shark is swimming and you have the light from the Sun coming down, " explained Dr Julien Claes, a shark biologist from the Catholic University of Louvain in Belgium, and the lead author of the study.

BBC: Glowing shark scares off predators with 'lightsabers'

Shark Net was designed to serve marine biologists, but you can bet surfers on the California coast are using it as well.

FORBES: Why Sensors Are a Force of Context

If you're diving in these areas, be aware of the shark risk before you enter the water, and dive with at least one partner, as sharks are less likely to mess with a group.

CNN: Stranded at sea? Follow this 7-step extreme survival guide