The document discusses how whales give birth and their respiratory systems. It is reported that calves are born tail first in deep waters and the mother brings the newborn to the surface to breathe. Whales breathe through a single blowhole or two blowholes located on top of their head, which brings air to their lungs. The blowholes act like a fountain, expelling water and air. Whales have small eyes and can close their eyelids in bright light and open them in low light.