Rare video captures following and biting courtship behavior in elusive whale sharks - Surfer attacked by two great white sharks says nearly being eaten alive 'improved life' - Unique killer whale pod may have acquired special skills to hunt whale sharks - Sharks leap out of the water more often than you might think - Study examines how sharks are being impacted by a changing ecosystem - Dramatic moment bull shark tries taking fisherman's catch - Bull sharks 'more abundant' in Sydney Harbour during summer and autumn - Resting gray reef sharks change what we know about how they breathe