Horseshoe crabs are actually harmless despite their terrifying looks..

Beyond harmless, their blue blood is an essential component in the making of thousands of medicines and vaccines. They have saved millions of lives. https://t.co/Z7psV6lGpm https://video.twimg.com/ext_tw_video/1845562773406638080/pu/vid/avc1/1280x720/0oktT16jGkBiduPk.mp4?tag=12