This hermit crab, carrying a replica of Constantin Brancusi's Sleeping Muse, has become a star at the Frieze Art Fair in an installation called “Recollection” by artist Pierre Huyghe.
Jessica Hamzelou describes the piece thus:
The idea is that the natural interactions between the creatures - or performers - will create a story for viewers. While I sat watching the scene, I did see what looked like a brief tussle between two arrow crabs - a struggle for alien territory, perhaps? Or maybe an attempt to impress the regal, art-adorned crab king?
Learn more at this article at New Scientist (may require registration).