Some of us are quite helpless first thing in the morning, only half awake barely able to face the day. But the dolphin stays totally in control and completely aware of its surroundings even when half asleep.
Dolphins are extraordinary creatures.
They are mammals, they breathe air with lungs and can make a large gulp last up to an hour when plunging into the depths of the ocean. They give birth to live young which suckle milk. They are highly agile predators with a torpedo-shaped body, an elongated head with a bulging forehead, and a beaklike snout. They are renowned for their high intelligence, which enables them to home in on unsuspecting prey and communicate effectively with each other. They have a special waxy body in their swollen forehead known as a melon which focuses sound produced in the nasal passages and enables them to use echolocation to find prey such as squid and krill in deep, and often dark, waters.