Sea urchins are among the oldest living animals on earth. Thanks to their simple yet effective physiology, the prickly purple critters have survived since the planet was a primordial smorgasbord of ...

In this video, someone appears to step directly onto a sea urchin with a bare foot, causing an instant shock reaction. The spines press into what looks like real skin, making it almost painful to ...

Using a realistic fake foot, we showed exactly what happens when you step on a sea urchin — up close and safely. 🌊 ‘We are witnessing a full-blown cover-up’: Rep. Raskin responds to DOJ release of ...