"Mad Hatterpillar"

Mad Hatterpillar. Winner, Behavior: Invertebrates. Georgina Steytler showcases the strange headgear of a gum-leaf skeletonizer caterpillar. This caterpillar’s unusual headgear is made up of old head capsules, each retained with every molt. The resulting tower is believed to help deflect attacks by predators. Location: Torndirrup National Park, Western Australia, Australia.

This was my favorite among the photos from the Wildlife Photographer of the Year entries posted at The Atlantic.