Certain organisms, like fireflies and some deep-sea fish, can naturally produce light in darkness—a process called bioluminescence. You can even enjoy bioluminescent algae at home; they’re easy to care for in seawater and need just a bit of light to flourish. With a little shake after dark, they’ll emit a captivating blue glow. These algae are both fun companions and make for an extraordinary, one-of-a-kind gift!
