Big, hungry lobsters have been recorded eating other lobsters in the wild for the first time.
It's already known that lobsters attack and eat each other if kept in a confined space.
But nobody thought it really happened out in the wild until researchers in the USA caught it on camera.
Small lobsters were seen on a special infrared camera being eaten by bigger lobsters in the night.
One of the reasons could be due to a rise in the number of lobsters in the Gulf of Maine.