Dolphins : Dolphins Under the Sea By: Taylor and Cherri Hi, welcome to our Dolphin Presentation. Why Did We Pick This Animal? : We chose the dolphins because they are so friendly with people.
Another reason why we chose the dolphin is because they are a mammals like we are. Why Did We Pick This Animal? Description : Description DESCRIPTION : DESCRIPTION Dolphins have gray skin, they can also have different color skin. There is a pink dolphin in the Amazon.
The body is sleek and smooth; the hairless skin is rubbery to the touch. Most species have jaws that protrude into a beak like snout.
They are a warm-blooded vertebrate animal. Adaptations : Adaptations Dolphin’s have smooth skin.
They have slippery bodies that help them glide through the water.
Blubber (fat) helps the dolphin stay warm in cold water. Habitat : Habitat Slide 7: General Habitat This animal lives in warm salty waters. They are able to live in a wide variety of marine habitats, from deep oceans to shallow shorelines. Coastal living dolphins can be found in harbors, bays,lagoons, and river mouths that open into the oceans. Offshore living bottlenose dolphins do equally well in the deep, cold oceans far from shore. Temperatures : Temperatures Dolphins are sensitive to water temperature changes
The largest bottlenose dolphins live in the coldest waters. The smallest live in the warmest waters.
Ocean temperatures can also affect the kinds of foods that live in an area, which in turn affects dolphin behavior. Water : Water Since dolphins live in the water it is very important to them.
Dolphins breath air even though they are water animals and they can drown in fishing nets.
Dolphins are very sensitive to changes in their habitat from trash being dumped to global warming. Plant Life : Plant Life There are different water plants that are in a dolphin's enviroment.
There is seaweed and plankton
Dophins eats fish who live on this plant life. Animal Life : Animal Life There are different animals that live in a Dolphins enviorment.
There are little fish that Dolphins like to eat like shrimp or mullet
The big animals that also share the same habitat are sharks and sea turtles. Sensory Organs : Sensory Organs Sight : Sight Dolphins have very good vision both above and below the water.
They are able to see in both environments, because they can control the way light enters their eye.
One way they use their sight to escape predators Smell : Smell It is believed that they have no sense of smell
They rely on their other senses to help them in the wild
Tasting the water can be their way of "smelling" it. Hearing : Hearing Dolphins hear about 7 times better than humans do.
They can hear vibrations in the water
It is believed that their teeth are arranged in a way that works as an antenna to receive the incoming sound Taste : Taste Little is known about a dolphin's sense of taste
They do have taste buds
They show strong preferences for certain types of fishes. Slide 17: Touch The dolphin's sense of touch is also well-developed
A bottlenose dolphin's skin is sensitive
It will shy away if a human attempts to touch it. Food and Life Cycles : Food and Life Cycles Life Cycle : Life Cycle After eleven or twelve months, depending on the species, a pregnant dolphin gives birth.
Dolphins, like almost all mammals, give birth to live young, and nurse them
A calf stops nursing at 18 months. At 3-4 months old the calf gets teeth and begins to eat fish. When calves are only a few days old they can vocalize (make sounds).
A dolphin’s average life span is probably 20 years or less; even though, dolphins have lived as long as 48 years. Food Chain : Food Chain The sun warms the plants, which the small sea animals eat, and the dolphin eats the small sea animals, and the shark eats the dolphins. Interesting Facts : Interesting Facts Interesting Fact #1 : Interesting Fact #1 These warm-blooded mammals belong to a group which also encompass all whales. Interesting Fact #2 : Interesting Fact #2 Dolphins have been clocked at speeds of 26.3 km/hr, which they maintained for about 1500 meters, leaping constantly. Interesting Fact #3 : Interesting Fact #3 A dolphins’ long nose helps them kill sharks. Interesting Fact #4 : Interesting Fact #4 They breathe through a special opening on their heads called a "blowhole". When dolphins are relaxed or underwater, their blowholes are closed. Resources : Resources http://library.thinkquest.org/CR0215242/dolphins.htm
http://library.thinkquest.org/3935/DOLPHINS.HTM Slide 27: The End Bye - Bye Hope you enjoyed the show!