Read PDF Dolphin Facts for Kids: Learn Fun and Interesting Facts About Dolphins (Learn About Nature)

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Contents:
  1. dolphin lifestyle and reproduction
  2. Padi Language Selector
  3. 10 Fascinating Dolphin Facts
  4. Dolphin Facts For Kids -Learn All About Dolphins - Kidz Feed

A dolphin's blowhole isn't just a hole — it's actually their version of a nose and makes it possible for them to breathe. The blowhole also helps them communicate. Air passes through the muscles, which allows them to whistle and make those noises that many believe is their form of language. Type keyword s to search. They're extremely smart. NiCK Getty Images. They are super maternal. David Tipling Getty Images. Calves will stay with their mothers for years. Philip Waller Getty Images.

They barely have any enemies. Thomas Janisch Getty Images. They live in pods. Peter Pinnock Getty Images. They have so many dolphin friends. They love to play-fight together. They nap quite often.

dolphin lifestyle and reproduction

Tunatura Getty Images. They basically give each other names. They are known for taking care of sick or injured animals. They do not chew their food. Steve Clancy Photography Getty Images.

Padi Language Selector

They might have their own language. They have to tell themselves to breathe. They only sleep with half their brains. Westend61 Getty Images. They have intercourse for fun, not just for mating. They use sonar to navigate through the ocean.

Killer whales are the largest type of dolphin. Niklas Bernstein Getty Images.


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Their skin regenerates every two hours. Rodrigo Friscione Getty Images. They teach their young how to use tools. Rene Frederick Getty Images. They may have started off as land animals. Elena Malysheva Getty Images.

20 Fun Dolphin Facts You Never Knew

Their blowhole is actually a nose. Advertisement - Continue Reading Below. It is nearly impossible to tell male and female dolphins apart at first glance, unless the female is traveling with her calf. Upon closer inspection, though, male dolphins have two slits on their bellies and females have four. So you need to turn them over to tell them apart.

Most dolphins have eighty to one hundred cone-shaped teeth. The long-beaked common dolphin, however, can have up to small, sharp teeth. The teeth of a dolphin are all shaped the same, and are not used for biting or chewing.

10 Fascinating Dolphin Facts

Rather, they are used to grip objects and rake other dolphins. The teeth of a dolphin also act like antenna, sending sound waves that are transmitted from inside its lower jaw during the process of echolocation. Dolphins have rubbery skin with no hair. They shed their outermost skin layer every two hours, so their skin stays smooth.

Dolphins have a thin layer of blubber under their skin that accounts for eighteen to twenty percent of their total body weight. Dolphins do not have a sense of smell, but have very good senses of sight and hearing, which they rely on to navigate through water, hunt, and communicate. Dolphins have an ability called echolocation , which is the ability to locate objects by listening for echoes, which are sound waves bouncing off of objects.

Because dolphins are sensitive to sound, they can become disoriented, or ultimately lose their hearing when there are loud sounds underwater. Some of them can even die from the stress. Dolphins do not have vocal cords. Rather, they produce sounds by moving air through their nasal passages. Dolphins can produce a variety of sounds, classified into three types — click trains or a series of clicking sounds; burst pulses which are repeated clicks that humans hear as buzzing sounds; and whistles that vary in frequency.

Mother bottlenose dolphins whistle to their calves continuously after birth, in order to help them identify the sound. Bottlenose dolphin calves develop their own signature whistles as early as one month old. Dolphins swim at speeds of five to eleven kilometers three to seven miles per hour, but can reach speed bursts of up to thirty-five kilometers twenty-two miles per hour. Dolphins can jump as high as sixteen feet up into the air, and can land on their backs, bellies, or sides. Dolphins are known to frequently jump out of the water while swimming, which is called porpoising. They do this to save energy when traveling long distances, and also to play, to communicate, and to dislodge parasites.

Spinner dolphins are well-known for their acrobatics. They can jump out of the water and twist their bodies several times — up to five times — in the air before jumping back in. Dusky dolphins can perform head-over-tail leaps — they jump into the air, then position their backs in a curve and flip their tails before going back into the water, so they jump back in head-first.

Dolphins, both young and old, play by chasing each other, tossing objects to each other using different parts of their bodies, and throwing objects out of the water—then going after them. Dolphins can be mischievous. While they generally do not eat birds, they can drag birds underwater as a form of play. Dolphins spend thirty-three percent of each day, or roughly eight hours, sleeping, which they break down into naps of two to eight minutes. They are never fully asleep, though, since they still need to come up to the surface to breathe.

Rather, only half of their brain is asleep, and only one eye is closed. Indus River dolphins sleep in short bursts of four to sixty seconds since it must swim continuously in a river that has strong currents and potentially dangerous floating debris. Oceanic dolphins eat a wide variety of fish, squids, and shrimp.

River dolphins eat catfish, crabs, and turtles. The largest of the dolphin family, killer whales, eat other dolphins, fish, squid, seals, walruses, sea turtles, otters, penguins, birds, baby polar bears, and even moose! Dolphins swallow their food whole, usually head-first. If the fish is too big, they will shake it or rub it against the ocean floor until it breaks into small pieces before eating. Most dolphins eat approximately four to six percent of their body weight per day, while nursing mothers eat about eight percent.

Dolphins often hunt in groups. They surround the large school of fish, close in, and then take turns eating.

Dolphin Facts For Kids -Learn All About Dolphins - Kidz Feed

They also herd fish toward mud banks, sand bars, and shorelines to trap them in shallow water. Some coastal dolphins have been observed using sea sponges as shields when looking for food on rocky bottoms, protecting them from spines, stings, and the sharp edges of rocks. Courtship between male and female dolphins can take place at any time of the year, and usually involves some head-butting and tooth-scratching. During courtship, male Amazon River dolphins carry branches or balls of hardened clay in their snouts and present them to females as gifts. Dolphin calves are born after a gestation period — the period of being inside the womb — of roughly ten to fourteen months, depending on the species.

Dolphin calves are about to cm thirty-nine to fifty-three inches long and weigh ten to twenty kg twenty-two to forty-four pounds. Dolphin calves are usually born tail-first to prevent them from drowning. As soon as the calf is born, its mother takes it to the surface to breathe. Dolphin calves are connected to their mothers with an umbilical cord — the same cord that connects human babies to their mothers. When studying their fins, scientists have found that they are actually formed like legs and toes.

So maybe our closest sea friends were wolf-like land animals once. Images of dolphins have been found carved into the desert city of Petra, Jordan. Petra was established as early as BC, so given that estimation dolphins have been around for quite a long time. Dolphins are the only animals give birth with the baby coming out tail first; the calf would drown if it was the other way. Just a tablespoon of water in a dolphin's lung could drown it, while a human would drown after two tablespoons. The blowhole of a dolphin is actually an adapted nose which has moved to the top of its head.

Dolphins can see with sound, they use their tell-tale clicks which travel long distances and bounce off of objects.

aspenmarketresearch.com/5394.php This allows them to know how far away the object is and the shape, density, movement and texture of it. Dolphin sonar is the best within nature and superior to bats sonar and man-made sonar. While sleeping, a dolphin must stay at the surface so its blowhole is not covered with water and it only switches off one side of its brain to keep breathing and staying alert.