For many creatures, having a limb caught in a predator’s mouth is usually a death sentence. Not starfish, though—they can detach the limb and leave the predator something to chew on while they crawl ...

If you’re able, watch this video. If not, allow me to explain. Two crown-of-thorns starfish are placed in separate tanks.

Imagine waking up to find your entire body gone — no torso, no limbs — just a head that has expanded, split into five ...