By  Gurpreet Singh | September 22, 2025

8 Strange Animals That Glow in the Dark

Vampire Squid

Living in the deep sea, the vampire squid uses glowing arm tips and bioluminescence to confuse predators and survive darkness.

Image: Canva

Hawaiian Bobtail Squid

This tiny squid glows by hosting luminous bacteria, using the light to blend with moonlit waters and avoid lurking predators.

Image: Canva

Flashlight Fish

Flashlight fishes are tiny fishes with glowing patches beneath their eyes, lighting up reefs like torches.

Image: Canva

Bermuda Fireworm

These marine worms glow in synchrony during mating, creating a glowing dance under the sea.

Image: Canva

Sea Sapphire

These tiny crustaceans flash brilliant blue light, then vanish instantly, creating a mesmerising disappearing act underwater.

Image: Canva

Tasmanian Devil

These fierce marsupials glow blue-green under UV light, a mysterious trait that may aid communication or camouflage.

Image: Canva

Glow-Worm

Glow-worms hang glowing silk threads to trap insects, turning caves into starry heavens.

Image: Canva

Dinoflagellates

These glowing plankton make waves sparkle, creating magical blue seas at night.

Image: Canva

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