Cetaceans are likely to have come from some predatory animals that are close to ancestors of dogs.
But there is also an assumption that cetaceans came from insectivorous. But nevertheless it is known that they appeared about 70 million years ago, and now all their connections with land were lost long ago. Their adaptability to life in the sea is expressed much better than adaptability of all other water mammals.
The nature transformed cetaceans’ forefeet into flippers, their hind legs disappeared at all. Their body looks like fish’s one, but caudal fin is set horizontally, but not vertically as fish’s fin. Dolphins belong to a group of mammals called cetaceans.
Modern cetaceans are divided into two subclasses: toothed and whiskered whales. The Dolphins are representatives of toothed whales. But what are dolphins? Almost everyone knows the answer. These are the animals that teach people to live in harmony with each other, to love each other, to live in peace. They are really wonderful, beautiful, fascinating animals.
Looking at their eyes we can see their life, love and freedom! These feelings are not alien to dolphins, because like each of us they are mammals. Like all of us they have teeth, blood, heart, they nurse their little children and take care of them. These magic creatures stagger by their kindness, intelligence, by their desire to communicate with people, be close to them. These animals are loved and adored in many countries through out the world by people of various cultures, nationalities and religion.
