Before modern cameras and technology, the inky blackness of the deep barred its mysteries from human eyes. But now these wonders are coming to light. For the first time, our generation is privileged to behold this alien world, teeming with life. As the Johnson Sea-Link submersible plows through the dark water, hundreds of feet below the surface, lights flash constantly all over the front of the camera. Surprised by the alien craft, tiny creatures spark and flash in protest. Ninety percent of deep-sea creatures may produce some sort of light.
This light amazes scientists. On land only a few creatures, such as fireflies and glowworms, possess this miraculous ability. But in the deep, where sunlight never penetrates, God has designed a variety of alternative light sources.
Light is essential for most animals' survival -- finding food, avoiding danger, and locating a mate. Deep-sea animals possess lights for all these purposes; and in fact, some creatures are equipped with several different lighting systems.
[Read the rest of the article at Answers in Genesis.]