Dolphins are marine mammals that are closely related to whales and porpoises. There are almost forty species of dolphin in seventeen geaner. They vary in size from 1.2 m (4 ft) and 40 kg (90 lb), up to 9.5 m (30 ft) and 10 tonnes. They are found worldwide, mostly in the shallower seas of the continelnta shelves, and are carnivores, mostly eating fish and squid. The family Delphinidae is the largest in the Cetacea, and relatively recent: dolphins evolved about ten million years ago, during the Miocene. Dolphins are considered to be amongst the most intelligent of animals and their often friendly appearance and seemingly playful attitude have made them popular in human culture.
Behaviour …show more content…
Attitude (N.) : The way that you think and feel about somebody or something.
• The government's attitute towards single parents.
7. Cognition (N.) : The process by which knowledge and understandind is developed in the mind.
• Child studies centring on theories of cognition.
8. Inadequate (Adj.) : Not good enough (for something)
• The food supplies are inadequate to meet the needs of the hungry.
9. Extensively (Adv.) : Covering a large area or including with a wide range of in formation.
• Ginger is a herb used extensively in Thailand cooking.
10. Captivity (Adj.) : The state of being kept as a prisoner or in an enclosed space.
• He was held in captivity for three years.
Reference
1. The Dolphin Institute, How Dolphins Perceive Their World, article retrieved March 24, 2009.
2. Goodson, A.D. and M. Klinowska. "A Proposed Echolocation Receptor for the Bottlenose Dolphin (Tursiops truncatus): Modelling the Receive Directivity from Tooth and Lower Jaw Geometry", in Thomas and Kastelein, eds, NATO ASI Series A: Sensory Abilities of Cetaceans, vi.196:255-267 (Plenum NY, 1990) ISBN 0-30-643695-7
3. SeaWorld, Bottlenose Dolphins - Senses, article retrieved December 17