Hello friends!
Today it's the chance to talk about dolphins, they are one of the most intelligent animals in the Earth. Curiously they are one of the few species who have made an "inverse evolution",i.e., though they are aquatic animals, they belong to mammals keeping on mind their ancestors come from shore. Therefore, thanks to their high adaptation in oceans and seas (as many cetaceans), they are excellent swimmers who can easily reach the speed of a torpedo.
They have already a powerful way of pinpointing as their food (smaller fish) as their mates (they usually go in groups) called "echolocation". It makes up about making low pitches that go to outside and rebound as an echo, which let them comprehend essential information about the surroundings.
Dolphins are characterized by the ability to communicate with different sounds to their mates depending of their mood. For example, when they feel very happy or very sad they usually make high-pitched sounds and just while they have an usual mood they make long noises with different frecuencies. Here is a little evidence they already use an advanced communication system.
Besides, many of them are able to protect to members who are injured or ill, assuring the welfare of all ones. One of their proofs makes up about many dolphins are able to lift to surface who have diseases for breathing.
Dolphins are one of the highest mysteries of the sea in the world where we live.
