DOLPHINS

As you observe these playful creatures, you become more fascinated in them. Dolphins have a hole in the top of their head called a BLOWHOLE. The dolphin opens and closes the petite hole. When the dolphin does this really fast, it creates the whiny noise. Dolphins use very high sounds for echolocation, so they can perceive sounds as high as 150 kHz. They can hold their breath for up to 20 minutes while underwater. Unlike humans they are conscious breathers, meaning they have to remember to breathe. A dolphin’s life span is pretty long compared to other animals. Marine biologist says that you can expect a dolphin to live up to 20 years old. A couple dozen dolphins lived to about the age of 50. That’s a long life for a dolphin!