How Sperm Whales Sleep #shorts

[0:00]You're probably wondering, what on Earth are these? They look like alien eggsacks floating around the sea, straight out of science fiction movie. This is sperm whale. Adult sperm whales weigh up to 45 tons. And this, this is how they sleep. In 2008, a team of scientists from Scotland and Japan bumped into a group of sperm whales in the Caribbean drifting vertically close to the surface of the water. By observing the whales, the researchers found that they are sleeping. They have the shortest sleep cycle out of any mammal on Earth, power napping around ten to 15 minutes each time. Sperm whales have to hunt very often. They consume about 2000 pound of food every day, such as squid, octopus and fish. Researchers found out the reason why they sleep vertically. It's so that they can float near the surface of the water and stay alert to potential predators and control their breathing. Scientists believe they sleep with one eye open and one half of their brain awake. Half awake, but sleeping.