@CNN: As if their deadly venom and spiny exteriors weren’t enough, scientists have discovered that stonefish have a hidden switchblade in their heads that they can flick out whenever they feel like they’re in danger https://t.co/P5jfoUHyVv https://t.co/X6ZPVFB2Wj

As if their deadly venom and spiny exteriors weren't enough, scientists have discovered that stonefish have a hidden switchblade in their heads that they can flick out whenever they feel like they're in danger https://t.co/P5jfoUHyVv pic.twitter.com/X6ZPVFB2Wj

— CNN (@CNN) April 13, 2018