Blue Warm Cave

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This 30-million-year-old cave in New Zealand has a beautiful phenomenon that doesn't exist anywhere else in the world

Blue Warm Cave

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15 seconds

15 seconds

The World Amazing Natural Phenomenon

Nestled within the limestone caverns of New Zealand lie clusters of bioluminescent arachnocampa luminosa, commonly known as glow worms, which emit a vivid blue-green radiance of sufficient intensity to illuminate their subterranean habitats.

The arachnocampa luminosa, a remarkable and peculiar species, is indigenous to the North Island, a region located in the northern part of the country. Auckland-based photographer Joseph Michael captured the mesmerizing creatures, inhabiting caves that date back to approximately 30 million years, by dedicating numerous hours in the frigid waters of the caves.

Glowworms are actually the larvae of the fungus gnat, a type of fly that resembles a mosquito.

The glowworms are found only in New Zealand and eastern Australia. The Australian worms have smaller lights and tend to stay in smaller groups.

The first part of the species' name, Arachnocampa, means "spider worm," and refers to the web of silk threads the worms use to snatch their prey.

The roofs of caves make great homes for the larvae, which often reside side-by-side in groups of hundreds, because of their damp, sheltered surface.