Echinoderms: Sea Star Time-lapse: Eating Mussel


A tiny camera placed inside a mussel shows how a sea star slips its stomach inside the mussel to digest the mussel’s flesh.

Next Generation Science Standards for this Video

A sea star uses its strong arms to pry open a mussel shell. It everts its stomach to digest the flesh outside its body.

Predator-prey interactions: how sea stars prey on mussels. Through natural selection predators and their prey adapt ways of hunting and defense. Mussels close-up tightly but strong sea stars can still pry them open.