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A two-headed shark was captured off the west coast of Australia, National Geographic says. Christopher Johnston was fishing in 2008 when he and colleagues pulled up a pregnant shark and found it, about two-thirds the size of the other pups inside the big blue shark, he said. Johnston told National Geographic: "It looked like it had one dorsal fin and one umbilical cord. It had teeth like normal pups.'' More from National Geographic Christopher Johnston/via National Geographic Buy Photo