Baby sharks may be the key to the ultimate shark repellent

Marine biologist Ryan Kempster noticed a very strange thing when he brought an electrical field close to the egg case of an embryonic shark: The unborn β€” and highly vulnerable β€” baby altered its movements by ceasing its gill function. It's a strategy, he believes, that helps baby sharks to sense when a predator is… » 1/09/13 2:57pm 1/09/13 2:57pm