Bioluminescence

“You are the light of the world.” [Matthew 5:14]

Bioluminescence is an amazing phenomenon in which a chemical reaction in living organisms produces light, without any appreciable heat. This cool light, usually green or blue, results from a chemical reaction involving specialized phosphorus-containing molecules in the organisms. Bioluminescence is found in creatures ranging from the common firefly and glow worm, to some species of bacteria, algae, and fungi. This builtin lighting system can also be found in many invertebrate animals like squid, jellyfish, worms, and crustaceans. In fact, in the dim mid-water, or twilight region of the ocean (between 200 to 1,000 yards deep), 90 percent of all animals, including shrimp, produce light.

This organic light is produced in some ways like the popular luminous glow-sticks. When a glow-stick is snapped, two chemicals mix, react, and create a third substance that gives off light. Marine organisms do essentially the same thing within special organs or cells. One substance, luciferin, is mixed with an enzyme, luciferase, and a new molecule is formed that gives off that glowing blue-green light. Science has barely touched the surface when it comes to replicating this efficient light production. Bioluminescence is used for a large variety of reasons. Some deep-sea fish are equipped with fleshy organs that produce luminescence to which prey is attracted. The flashes emitted by male and female fireflies are used as species-specific signals for mating. It is also an obvious form of communication between species in a dark environment. Light can also be used to repel predators.

The sophisticated squid can control when light is produced, and even its color and intensity. But most sea creatures, like the microscopic drifting algae, have simple light producing systems that are stimulated by water movement. This is what causes the glow in the wake of a large ship passing through the water. During blackout conditions in war, more than one lost pilot has found his way back to the aircraft carrier by following the green glow behind the moving ship.

God’s church can be like a moving ship, creating a trail of light to lead others to heaven. Even our own lives should glow with light to attract others to Jesus. “Let your light so shine before men, that they may see your good works and glorify your Father in heaven” (Matthew 5:16).