13.06.2010 // I ♥ Dolphins
Interesting facts:
• Dolphins are highly social, playful, curious and intelligent. They live in groups or families called Pods.
• Dolphins sleep by resting one half of their brain at a time so that one eye is always open. This allows them to rise to the surface to breathe and to protect themselves from predators.
• A baby dolphin is called a calf. Baby dolphins are born tail first and suckle from their mother for up to 4 years. Mother dolphins produce milk that is extremely rich in fat, often up to 50 percent.
• Dolphins are carnivores eating mostly fish and squid and sometimes crustaceans.
• Dolphins use a type of sonar called echolocation, locating objects by producing frequencies with clicking sounds and listening for the echo. During echolocation, dolphins emit up to 700 clicking sounds per second.
Sursa
2010-09-02 19:11:00