Shark AI uses fossil shark teeth to get middle school kids interested in paleontology and computer vision / Biologists witness first case of a shark intentionally making sounds / Aquarium surprised by 'virgin birth' of swell shark in all-female tank / Mystery as shark born in aquarium inhabited only by female sharks / This shark pup was born in a habitat without any males. How did that happen? / The case of a robot shark in a marine park raises questions about animal welfare / Friends of US tourist eaten by shark while diving on dream hols reveal new theory after body found in beast's belly / Sea urchins: A surprising delicacy for sharks / Why are sharks coming to Boston Harbor? Researchers believe it's a nursery ground / What killed and ate a really big shark? An even bigger shark, scientists say