Anglerfish Use a Glowing Lure to Attract Prey

Green fluorescent protein, first isolated from the jellyfish Aequorea victoria, became a key tool for tracking molecules in living cells.

Single-celled dinoflagellates flash blue when disturbed, which makes breaking waves and swimmers' movements glow at night.

In the open ocean's deep waters, bioluminescence is so common that a majority of animals are thought to produce light.

The reaction is extremely efficient and produces almost no heat, which is why the light is often called cold light.