This is a group of sperm whales with a body length of 18 meters and a weight of more than 50 tons, and they enjoy their "happy time". The way they sleep on Earth is unique and mysterious. When they feel tired, their bodies become stiff, their heads are close to perpendicular to the surface of the sea, and they are motionless, like huge driftwood, and the scene is very shocking. According to scientists, sperm whales sleep longer than other marine mammals. They can sleep without breathing in the water and can sleep for more than 30 minutes at a time. This unique sleep pattern allows sperm whales to get plenty of rest after a long swim, helping to maintain good health.
In addition to their resting sleep in seawater, sperm whales can also perform a state called "hemicerebral sleep." In this state, sperm whales sleep only one side of the brain, while the other remains awake and continues to monitor their surroundings and look for food.
Scientists call this sleep state "unilateral sleep" so that sperm whales can remain alert and adapt to the marine environment while sleeping.
As giants in the ocean, sperm whales' unique sleeping methods are not only surprising, but also provide an important reference for human beings to study marine ecology and protect marine life.
