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Interesting facts about the behavior and characteristics of the Dolphin. Includes Habitat, Scientific Name, Lifespan, Diet, Predators and Threats.

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With their white bellies and dark backs, dolphins can be found jumping above the water, swimming alongside fishing ships, or riding the waves of large whales.

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Blue whales are able to breathe air, but they are very comfortable in the ocean waters where buoyancy helps to support their incredible bulk. These mammals are found in all the world's oceans and often swim in small groups or alone.

A blue whale calf weighs two tons (1,814 kilograms) at birth and gains an extra 200 pounds (91 kilograms) each day of its first year. These giant creatures feed on tiny shrimplike animals called krill.

Only a few thousand blue whales are believed to swim the world's oceans. They were hunted for many years for their blubber and oil, and they were almost hunted to extinction. They were protected under the 1966 International Whaling Convention and are now considered to be an endangered species.

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The blue whale is the largest mammal in the world. A blue whale calf weighs two tons (1,814 kilograms) at birth and gains an extra 200 pounds (91 kilograms) each day of its first year. Blue whales are able to breathe air, but they are very comfortable in the ocean waters where buoyancy helps to support their incredible bulk.

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Thought to be some of the smartest animals on Earth, bottlenose dolphins send messages to one another in many different ways. They squeak, squawk and use body language—leaping as high as 20 feet in the air, snapping their jaws, slapping their tails on the surface of the water, blowing bubbles and ev…

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These turtles are found nesting along the coastline of more than 80 countries, with the largest nesting populations found in Costa Rica and Australia.

Green sea turtles spend most of their lives underwater, where they can rest for up to five hours at a time before coming up for air. When active, they typically alternate between being underwater for a few minutes and coming up to the surface to breathe air for a few seconds. Green sea turtles are also known to sunbathe on land.

Unlike most other sea turtles, adult green sea turtles eat a primarily plant-based diet consisting of seaweed and sea grass. Scientists believe these green foods give the sea turtle's fat its green color. The shell of the green sea turtle is usually shades of a brown or olive color.

Similar to other sea turtles, green sea turtles migrate long distances between their feeding grounds and their nesting sites, with recorded distances longer than 1,615 miles (2,600 kilometers). They have strong paddlelike flippers that help propel them through the water.

Female green sea turtles leave the water in order to lay eggs on the beach and will choose the same nesting spot as where they were born. A female will dig out a nest with her flippers and lay a clutch of about 115 eggs. Then she'll cover the eggs with sand and return to the sea. After about two months, the babies will use a special "egg tooth" to break their shells and hatch from their eggs.

The first few years of a green sea turtle's life are spent floating at sea, where they feed on plankton. As they grow older, the turtles move to shallow waters along the coast, such as bays and lagoons, where they find sea grass to eat.

Adult green sea turtles face many threats, primarily from humans, including injuries from boat propellers, being caught in fishing nets, pollution, and poaching. Newly hatched sea turtles are also at risk of being hunted by animals such as birds, crabs, and raccoons as they move from their nests out to the sea.

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Green sea turtles are the world's largest species of hard-shelled sea turtle. While most individuals weigh about 300 to 400 pounds (136 to 181 kilograms), some can be as heavy as 440 pounds (204 kilograms). These turtles are found nesting along the coastline of more than 80 countries, with the largest nesting populations found in Costa Rica and Australia.

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When a great white shark is born, along with up to a dozen siblings, it immediately swims away from its mother. Born on the east and west coasts of North America, the south of Africa and southwest Australia, baby sharks are on their own right from the start. Their mother may see them only as prey.

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When a great white shark is born, along with up to a dozen siblings, it immediately swims away from its mother. Born on the east and west coasts of North America, the south of Africa and southwest Australia, baby sharks are on their own right from the start.

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Sharks have been around for 450 million years. Find out about their unique features and way of life!