catshark funfact of the day:
the chain catshark (scyliorhinus retifer) is biofluorescent. this means that they glow and that happens due to proteins or pigments in their skin which absorb short blue light and emit longer green light. it hasn't been fully discovered yet why this happens but it is believed they do it for multiple reasons: mate attraction, to avoid/confuse predators and to lure pray.













