This week’s critter lives in the twilight zone of the world’s largest ecosystem and is the largest glow-in-the-dark vertebrate in the world.
The kitefin shark is a powerful and solitary hunter that will take a bite out of pretty much anything. But don’t worry – it lives far too deep to ever be a danger to humans!
Kitefin Shark Photo: Jérôme Mallefet, Darren W. Stevens, and Laurent Duchatelet. CC BY 4.0
