| Dolphins are marine mammals found in all
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| | dolphins, the dorsal fin is hooked-shape
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| the world's oceans, relatives to whales
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| | instead of like a triangle. The male
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| and porpoises. River dolphins live in
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| | killer whales have very tall dorsal fins
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| freshwater rivers and lakes. They are
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| | whereas in river dolphins it scarcely
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| intelligent and playful creatures and
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| | forms a ridge on the back.Besides using
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| friendly to humans.Dolphins have a sleek
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| | eyes, dolphins can find their way by
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| body shape, which helps them to be good
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| | making clicking sounds, and listening to
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| swimmers. They have long snouts, a row of
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| | the sounds that echo or bounce back to
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| sharp teeth, and a blowhole for breathing
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| | them from their surroundings. This is
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| on top of the head. They feed on fish,
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| | called echolocation.Under their skin,
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| squid, and other small marine
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| | dolphins have a layer of fat called
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| life.Feeding dolphins at SeaWorld,
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| | blubber. It insulates the dolphin so it
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| OrlandoDolphins are social animals, and
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| | can keep warm even in cold water. The
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| usually live and hunt in groups. They
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| | colder the water is where the dolphin
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| communicate with each other with sounds
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| | lives, the thicker the layer of
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| such as whistles, screeches, and clicks.
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| | blubber.BehaviorDolphins are social
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| Dolphins are often friendly to humans,
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| | animals that live in schools of varying
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| riding on waves produced by boats, aiding
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| | size; some only have 2-5 dolphins while
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| lost swimmers, and adapting to life in
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| | enormous schools of 1,000 or more have
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| captivity performing tricks and
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| | been found as well. A typical school of
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| jumps.There are at least 40 different
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| | bottlenose dolphins might be 10-20
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| species of dolphins. The one most
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| | individuals.For food, dolphins hunt fish,
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| commonly used in amusement parks and
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| | squid and other invertebrates; killer
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| performances is bottlenose dolphin, which
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| | whales also feed on other marine mammals,
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| has a 'built-in' smile formed by the
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| | sea turtles, and birds. Dolphins often
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| curvature of its mouth. The killer whale,
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| | hunt together, trying to catch schools of
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| or orca, is the largest member of dolphin
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| | fish. They can use echolocation to find
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| family.
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| | prey in deep, dark waters.Dolphins make
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| Physical featuresDolphins have a sleek
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| | whistles, clicks, and screeching sounds
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| body shape, so as to offer the least
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| | to communicate with each other, and for
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| resistance for swimming. The two flippers
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| | echolocation. In many species each
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| located underside help the dolphin steer
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| | individual dolphin makes a unique
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| its course. The bones in these flippers
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| | 'signature whistle'. Human-made
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| resemble human hand! The tail with flukes
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| | underwater sounds, such as used with
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| provides the main swimming force.As
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| | sonar images, can interfere with
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| mammals, dolphins have to breathe air.
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| | dolphins' communication, and even injure
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| They do so through a single blowhole on
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| | tissues used for hearing and air
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| the top of the head. It has a muscular
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| | intake.Dolphins also help each other in
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| plug to keep water out of the lungs while
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| | various ways. If a dolphin is sick and
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| diving. The head has a long snout.
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| | can't raise to the surface to get air,
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| Dolphins have a long row of conical teeth
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| | another one supports it at the surface so
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| that are used for catching and tearing
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| | it can breathe. Or, a dolphin may stay
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| prey - not for chewing.Different dolphin
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| | near an injured or sick one as a
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| species vary a lot in size. The smallest
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| | companion. Dolphins also defend an
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| one, tucuxi dolphin, is about 4 feet
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| | injured one against a threat such as a
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| (1.2m) long and weighs about 110 pounds
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| | boat.Male and female dolphin take part in
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| (50kg), whereas the enormous killer
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| | courtship, which involves playing,
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| whales is over 30 feet (9-10m) long and
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| | caressing, and 'songs'. Gestation lasts
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| weighs 12,000 pounds (5 500 kg).You've
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| | about a year, and then a single calf is
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| seen the gray ones, but dolphins can also
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| | born. Calving usually occurs once every
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| be black or brown, and can have patterns
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| | two years. Dolphin mother produces very
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| of white or light colors.In the middle of
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| | high-fat milk for her young. The calf is
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| their back, many dolphins have what is
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| | weaned aroud 6 months to two
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| called a dorsal fin. It helps them to
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| | years.Certain dolphin species live quite
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| keep their balance. Furthermore, each
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| | long, 50 years or more, while the
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| dolphin's dorsal fin is shaped
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| | bottlenose dolphin and common dolphin
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| differently from the others. It's like an
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| | typically live around 20-25 years.
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| identification mark. In some ocean
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