01/03/2023
Some sharks glow in the dark.
Sharks boast some enviable—and terrifying—features, like their sleek design and razor-sharp teeth. And while glow-in-the-dark sharks sound like something you'd see in a sci-fi film, they're totally real, as noted in a 2019 study published in iScience. Researchers were already aware that some shark species produce a glow that only other sharks can see, but now scientists have discovered that "previously unknown small-molecule metabolites are the cause of the green glow," according to CNN. This glow "helps sharks identify each other and even fight against infection on a microbial level."
