Dolphins Instructor: Instructor: Ms. Phuong Trang Ms. Phuong Trang Group Group : : Thanh Tung Thanh Tung Kim Anh Kim Anh Thanh Hong Thanh Hong Bich Duyen Bich Duyen The Presentation Outline I. Introduction: II. Learning about Dolphins 1. Physical Characteristics - Description - Adaptation - Habitat 2. Sensory Organ - Sight - Smell - Hearing - Taste - Touch 3. Food For Dolphins And Life Circle III. Interesting Facts About Dolphins Description • Different color skin • The sleek and smooth body • Warm-blooded vertebrate animal II. LEARNING ABOUT DOLPHINS II. LEARNING ABOUT DOLPHINS 1. Physical Characteristics 1. Physical Characteristics Adaptations Adaptations • Slippery bodies → glide through the water Slippery bodies → glide through the water • Blubber → stay in warm water Blubber → stay in warm water Habitat Habitat • Live in warm salty water Live in warm salty water • Be sensitive to changes in their habitat Be sensitive to changes in their habitat II. LEARNING ABOUT DOLPHINS II. LEARNING ABOUT DOLPHINS 2. Sensory Organs Sight Sight Very good vision Very good vision → to avoid dangers → to avoid dangers Smell Smell No sense of smell No sense of smell Hearing Hearing Better than humans Better than humans Taste Taste Differentiate many kinds of food Differentiate many kinds of food Touch Touch Sensitive Sensitive II. LEARNING ABOUT DOLPHINS II. LEARNING ABOUT DOLPHINS 3. Food And Life Cycles Plants Plants Seaweed and plankton Seaweed and plankton Animal food Animal food • Fish living on the sea plants Fish living on the sea plants • Shrimps and mullets Shrimps and mullets Food Chain Food Chain • Give birth after eleven or twelve months and do nursing Give birth after eleven or twelve months and do nursing • A dolphin’s average life span: 20 years or less A dolphin’s average life span: 20 years or less II. LEARNING ABOUT DOLPHINS 3. Food And Life Cycles Life Cycles III. INTERESTING FACTS ABOUT DOLPHINS 1. Unlike any other mammals, dolphin babies are 1. Unlike any other mammals, dolphin babies are born tail first. And a mother dolphin will stay a born tail first. And a mother dolphin will stay a calf for two to three years. calf for two to three years. 2. A dolphin’s long nose helps them kill sharks. 2. A dolphin’s long nose helps them kill sharks. 3. They breath through a special opening on their 3. They breath through a special opening on their heads called a “blowhole”. When dolphins are heads called a “blowhole”. When dolphins are relaxed or underwater, their blowholes are closed. relaxed or underwater, their blowholes are closed. 4. Dolphins have been clocked at speeds of 26.3 4. Dolphins have been clocked at speeds of 26.3 km/hr, which they maintained for about 1500 km/hr, which they maintained for about 1500 meters, leaping constantly. meters, leaping constantly. 5. Dolphins, like cows, have two stomachs – one 5. Dolphins, like cows, have two stomachs – one for storing food and one for digesting it. for storing food and one for digesting it. The End Thanks for focusing Bye - Bye Hope you enjoyed the show!