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ON LAND
In a forest in North America, mushrooms glow with an eerie green light. Fireflies signal one another in a pattern of yellow flashes.
Deep inside a cave in New Zealand, a hungry glowworm can produce over 40 sticky lures!
IN THE OCEAN
In the deep seawater world of complete darkness, the only light comes from living things:
- The vampire squid waves its flashing arm tips to startle predators.
- The deep-sea anglerfish dangles a light to lure prey.
- The stoplight loosejaw dragonfish uses its red light (invisible to other organisms) to illuminate prey.
- The hatchetfish and bristlemouth use their light to blend in with dim sunlight coming down from above and to hide from predators prowling below.
Image Credits:
Firefly, © Jeff. J. Daly/Alamy; Waitomo glow worm larvae, © Kjell B. Sandved/Visuals Unlimited; deep-sea anglerfish, courtesy of Edith Widder/HBOI.