Three species of deep-dwelling shark have been shown to glow blue in the dark, with one, the kitefin shark that grows up to 1.8m long, now recognised as the world’s largest-known bioluminescent shark.
Three species of deep-dwelling shark have been shown to glow blue in the dark, with one, the kitefin shark that grows up to 1.8m long, now recognised as the world’s largest-known bioluminescent shark.