I tested what really happens when a fake foot steps on a sea urchin to see how dangerous the spines are and how they react ...

Using a realistic fake foot, we showed exactly what happens when you step on a sea urchin — up close and safely. 🌊 ...

Stunning microscopic footage has captured the moment a translucent baby sea urchin crawled across a bed of red algae. The video earned fifth place in the annual Nikon Small World in Motion competition ...