One of the most popular animals in human culture is the dolphin. The dolphin is a marine mammal that is said to have a healing nature. They are compassionate mammals that like affection and can often be easily trained. Dolphins have acute eyesight. They can see very well when they are in and out of the water. They have superior hearing compared to humans. Dolphins have a small ear hole on each side of their head but they also use vibrations that go to the middle ear from the lower jaw. The dolphin's sense of touch is also well-developed, with free nerve endings being densely packed in the skin, especially around the snout, pectoral fins and genital area.
Dolphins are very intriguing mammals. Dolphins have always had my interest because they are such peaceful creatures. They always seem to be happy and serene. They behave well in their natural environment or when they are in captivity to do shows for our amusement. They are very adaptable to people and allow you to swim with them.
Dolphins are very social mammals and live in schools of up to a dozen members. Dolphins do however create larger sized schools when there is an abundance of food. These groups of dolphins when combined can exceed one thousand dolphins. They communicate by using whistles and a variety of clicking noised. They also tend to use ultrasonic sounds for echolocation. The sounds come from an air sac located just below the blow hole. Dolphins are unable to sleep like most sea animals because they need to come to the surface to breathe. Dolphins must remain semiconscious due to the possibility of a predator attack. The main species that dolphins have to be aware of are a few of the larger species of sharks such as the bull shark, dusky shark, tiger Shark and the great white shark.