This one made the twitter rounds with tweets from Jason and KaylinQ. Excellent hunting behavior captured as it hunts shrimp inside sponges and the surrounding algae. Of course I'm mesmerized by the color and texture changes as it goes from hunting to capture to post capture. The concentric orange and white circles in the "white square" position of Roger Hanlon's experiments and the orange posterior triangle. The complex patterns that emerge at the moment of capture an immediately after are very cool as well. Amazing animals, these king of the molluscs.