The ocean is full of examples of symbiosis \u2013 when two creatures have a close relationship, often that benefits them both \u2013 but some are more strange than others. In Bali, Indonesia, an underwater photographer spotted a particularly unusual example.\u00a0<\/p>\n
Yury Ivanov<\/a>\u00a0was on a night dive in Tulamben when he saw a peculiar creature scuttling towards him. It looked like a crab wearing an extravagant feathered hat.\u00a0<\/p>\n Ivanov soon realised that it wasn\u2019t one animal, but two.\u00a0\u00a0<\/p>\n \u201cThe sea urchin crab (Dorippe frascone) is carrying the upside down jellyfish (Cassiopea andromeda) on [its] back to protect itself from predators,\u201d he says on\u00a0Instagram<\/a>.<\/p>\n Watch: a sea urchin crab carries an upside down jellyfish in Bali. Credit: Yury Ivanov <\/p>\n Also known as carrier\u00a0crabs<\/a>, these crustaceans have developed the ability to hold other animals above them, like a shield, using\u00a0modified legs. <\/p>\n They can often be seen carrying spiky sea urchins<\/a> but jellyfish, with their stinging tentacles, work well too.<\/p>\n More amazing wildlife stories from around the world<\/p>\n