Sleepless whales

Here is an Interesting article about dolphins and whales. Researchers just discovered that newborns and their mothers actually do not sleep at all during their first month. Also, female bottlenose dolpins have been discovered to teach their daughters to use marine sponges in order to protect their snouts while searching for prey on the rocky ocean floor. Since this is only passed on from mother to daughter, this is the first known example of tool-related culture in cetaceans. Read that article here.