Dolphins often display a playful attitude which makes them popular in human culture. They can be seen jumping out of the water, riding waves, play fighting and occasionally interacting with humans swimming in the water.

Arnold Schonberg suffered from triskaidecaphobia, the fear of the number 13. He died at 13 minutes from midnight on Friday the 13th.

The brain is soft and gelatinous - its consistency is something between jelly and cooked pasta.

AMAZING FACTS