Here’s a clue to how this tube worm’s slime can glow blue for days

Scientists start to untangle the chemistry behind the mysterious light

a marine parchment tube worm glows blue against a black background

When threatened, marine parchment tube worms exude a sticky mucus that glows blue in the dark.

David Liittschwager

Predators that tread on a colony of parchment tube worms may find themselves slimed.