Performed by: Zinnyatullina Victoria Hoshbekyan Alla Project manager: Mukhitdinova N.M. Teacher of English
Dolphins, who are they?
Dolphins are related to a family of mammals, of the cetaceans order
What is the difference between dolphins and us?
Similarities and differences
Similarities Average height Common ancestor Warm-blooded Viviparous See the world in the same shades The same kinds of diseases (stroke, heart attack, diabete, neurological disorders) Creative approach to the process Gregarious lifestyle Communication between each other Amenable to learning Availability of names
Differences Habitant Brain weight Gyros Sleep Information about the world Perception of sounds Perception of high frequency sounds Life expectancy Dolphins Peoples 1.7kg 1.4 kg Dolphins has two times more Awake Asleep 90% echolocation and hearing aids 70%vision 3000 Hz – 20000 Hz 20 Hz – 20000Hz water land Yes No 20 – 30 years 45 – 55 years
Dolphin People Chimpanzee Monkey Rat
There are auditory and echolocation devices, that gives 90 % of information to dolphins
The amazing sounds
Even after the death of the dolphin skin remains intact