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  • Glowworm (Arachnocampa luminosa) in a cave in New Zealand.
    Rights: Markrosenrosen, Creative Commons 4.0 International Published 8 August 2017 Size: 2.5 MB Referencing Hub media

    Glow-worms have luminous tips at the ends of their Malpighian tubules – part of their excretory system – that emit bioluminescent light.

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