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.

According to a study by the Economic Research Service, 27% of all food production in Western nations ends up in garbage cans. Yet, 1,2 billion people are underfed - the same number of people who are overweight.

The longest recorded swim was 2938 km down the Mississippi River in 1930. The swimmer spend 742 hours in the water.

AMAZING FACTS