Awesome footage, filmed on June 3, of decorator crabs off the coast of Indonesia using other animals, such as jellyfish, as shells.

The video shows the strange but beautiful creatures grab other animals and use the stings and venom to defend themselves.

The filmer later wrote online: "Stinging or poisonous critters like sea urchins or upside-down jellyfish are particularly popular.

"It often comes to the surprise of divers, when the usually slow animals suddenly start running, and only the second view reveals they're stuck on the back of a crab."

When the decorator crab strikes, it is a bit like being abducted: it snatches other animals and sticks them on its back for its own protection. Stinging or poisonous critters like sea urchins or upside-down jellyfish are particularly popular... It often comes to the surprise of divers, when the usually slow animals suddenly start running, and only the second view reveals they're stuck on the back of a crab!