type of marine mammal that is closely related to dolphin whales and arapeps. There are about 17 species of dolphins in the world. Weighing up to 9.5 meters (30 feet) and weighing up to 10 tons (9.8 lit / 11th Stone), dolphins of different sizes, from 1.2 meters (4 feet) in length and 40 kg (90 pounds) weight (maui dolphin) Seen. Dolphins are seen around the world, especially in shallow seas near the continent. Dolphin is the main food of animal, fish and squid. It is estimated that dolphins originated in the Myosine period ten million years ago. Dolphin is considered the most intelligent animal in Qatar. Friendly behavior and player-friendly mentality have made Dolphin very popular to human society.