Unique facts about dolphins

1. Like to ride
Dolphin swim or follow the speed boat and jumping in front of the rear speed boat. They swam as fast as the speed boat. Pacific white-dolphins can swim at speeds around 28 km / h. When following a speed boat, they are even faster. How do they do? Speed ​​boat creates waves that push the water up. The dolphins swim in the waves and go with the flow created by speed boat. Thus, the dolphins do not have to expend energy to swim, but just riding with the flow.

2. Noise
The dolphins use sound to "see". They listen to a sound and reflections to find food and navigate. When hunting fish, dolphins are very noisy sound that makes the small fish become "kelenger".

3. The foot bone
Millions of years ago, dolphins have legs. Scientists see two pieces of pelvic bone in the skeleton of a dolphin. Maybe it's the former bone in his foot. Some scientists suspect dolphins ancestors walked on land.

4. Dental Runcing
If dolphins had dentists, doctors must be busy. Several species of dolphins have more teeth and longer than the crocodile. There are species of dolphins that have long teeth as many as 250 pieces. But dolphins do not like to bite humans. You never read the news there is a dolphin bite humans, right?

5. Cooperation Compact
Sometimes thousands of dolphins hunting together. They marched surrounded the prey. Surrounded by extensive areas, and then scaled so that the prey to the confusion, and then eaten.

6. Helping Fishermen
Dolphins are often clustered around a fishing boat while jumping. They lead the fish into the nets of fishermen. In Brazil, bottle nose dolphins signaled when the nets of fishermen have been filled with fish.

7. Nickname
Dolphins communicate with the "whistle" and the "name" to identify each other. Some scientists suspect that dolphins have a special call sign and use a special greeting when parting with his friends.

8. Midwives Helper
When the mother was about to give birth to a dolphin, a dolphin act as midwife, the vigil and help labor. After the baby dolphin is born, the midwife helped babysit a dolphin.

9. Humor like
Like humans, dolphins seem like a joke. A dolphin named Ake, asked to help clean the pond. He took a leaf or piece of dirt in the form of objects, and then delivered to the coach. After the dirt in the pool runs out, the dolphins make their own. he was peeling paint on the pond, and then delivered to the coach, laughing.

10. Life in Freshwater
Most of the species of dolphins live in the sea. However, there are five species of dolphins that live in watery river rapids. Freshwater dolphins can be found in South Asia, the Yangtze River (China) and the Amazon and Orinoco river (South America).

11. Dolphins Sleep Next to Eye
Vision system is impressive. When compared with human vision, the human eye can not focus on the water. Our vision will be blurred. Dolphins' eyes are like a sophisticated camera that allows them to be able to see clearly on land and in water. It is necessary for the dolphins. Each time the surface, the dolphin is carefully pay attention to the movement of birds around them. Because, in the birds have gathered together a bunch of fish. Several species of dolphins have to rise to the surface to breathe every 20 to 30 seconds. Berisitirahat dolphins with only half of their brain activate, and his eyes open sebelah.Lumba dolphins are very aware of this, and use it to find prey easily. Special design of the dolphin's eyes also protect their eyes from the sea water asin.Setiap dolphin eye can focus on a different point at the same time. Therefore, a dolphin can look forward with one eye to determine the direction of swimming while in case of danger to the eyes of others. If necessary, the dolphin can close one eye and half a brain mengisitirahatkan. After a while, he did the same change in the eye and the other half of his brain. For 8 hours, both sides of the brain's conscious. Then the left side will sleep for 8 hours. After the sides were built, the right hand going to sleep for 8 hours.