Embryonic Sharks Freeze To Avoid Being Eaten By Predators

Bamboo sharks developing in an egg case can sense predators and stay still to avoid detection, according to a new study published by today, Jan. 9, in the journal PLoS One. Bamboo sharks develop independently of their mother inside leathery egg cases for five months. During this time they are extremely vulnerable to predators and have to remain undetected in order to survive. It's know that predators, such as sharks, have highly sensitive electroreceptors that they use to detect electrical field...