In some caves in New Zealand there are "glowworms," bioluminescent fungus gnat larvae that glow bright blue and catch prey in sticky webs, like a combination of wanna-be spiders and fireflies. You can ...

Ruakuri Cave in Waitomo, New Zealand has a mesmerizing blue glow that is a sight to behold, but the beautiful light comes from an unexpected source: glow worms. The glow worms hang from the cave ...