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Wild Kratts FULL EPISODE! | Stuck on Sharks | PBS KIDS

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🦈🦑Wild Kratts - Ocean Explorers | Kids Videos

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Kratts Creatures-Swimming With Whale Sharks

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Kratts Creatures-Swimming With Whale Sharks

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Swimming with Whale Sharks = "One of the Best Ocean Experiences of my Life!"

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What Sam Sees: Swimming with a Small Shark

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What Sam Sees: Swimming with a Small Shark

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Swimming With a Small Shark | What Sam Sees

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5 Big Sharks The Rule The Sea: Nat Geo Wild 

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5 Big Sharks The Rule The Sea: Nat Geo Wild 

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5 Big Sharks That Rule the Sea | Nat Geo Wild

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Cool Facts About Sharks: Things You Wanna Know

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Cool Facts About Sharks: Things You Wanna Know

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Cool Facts About Sharks | Things You Wanna Know

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SeaWorld and OCEARCH are teaming up to bring the ocean to you. Through rescue, research, education and policy, we will increase our understanding of marine life to save species and their habitats.

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SeaWorld and OCEARCH are teaming up to bring the ocean to you. Through rescue, research, education and policy, we will increase our understanding of marine life to save species and their habitats.

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Today's Wonder of the Day was inspired by Maya from Fairfax, VA. Maya Wonders, " How many teeth do sharks have? " Thanks for WONDERing with us, Maya!

"Say cheese!" That's what you might say to a shark if you were trying to take an underwater in the ocean. After all, sharks have all those nice shiny teeth. Their smiles must make for great photos, right?

What? You wouldn't want to take a with a shark? Why not? Oh...all those sharp teeth...right. Gotcha. So just how many teeth do sharks have anyway?

As you might , the number of teeth a shark has depends upon exactly what type of shark it is. There are many, many different types of sharks in the world's oceans, and the number of teeth they have can vary greatly.

For example, great white sharks have approximately 50 teeth at any one time (their "" teeth). Like most sharks, however, they have rows of teeth in development that are ready to take the place of teeth that fall out. Some sharks have over 300 teeth in various stages of development within their mouths at any one time!

Unlike human teeth, shark teeth are not very strong and tend to fall out easily. It's not a big deal for sharks, because they are constantly producing new teeth to replace the ones they lose. In fact, some sharks can have over 50,000 teeth over the course of their lives!

Many sharks have teeth in rows. Both their upper and lower jaws can have 2-3 or as many as 15 such rows. Their teeth do not have roots, so they break off easily and may last as little as a week. New teeth can move to replace lost teeth within a day to a couple of weeks. The skin within a shark's mouth moves new teeth into position like a belt.

Although it might sound like a bad thing to be constantly losing teeth all the time, this system works well for sharks. Over history, sharks have developed extremely strong jaws that give them the bite that makes them the predators of the oceans.

When they bite into a tasty meal, they usually lose several teeth. If they couldn't replace those teeth easily, it would do them no good to have such a bite. So the ease with which they can replace teeth has actually helped sharks to develop the strong bite that defines them.

Since sharks go through so many teeth over the course of their lives, fossilized shark teeth can be easy to find along the shores of many beaches. Shark tooth hunting has become a popular for visitors to beaches with shark teeth.

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Today's Wonder of the Day may leave you WONDERing why you don't see more toothbrushes in the ocean!

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Today's Wonder of the Day was inspired by Mackenzie. Mackenzie Wonders, " How many sharks are in the ocean? " Thanks for WONDERing with us, Mackenzie!

How many stars are in the universe? How many fish are in the sea? Can these things even be counted? Or does the answer approach ?

How about one type of fish, like the shark? Surely we could get an of just the sharks, right? Actually, probably not!

There happen to be so many different types of sharks that it would be impossible to them all. There could be a billion or more sharks in all the oceans around the world.

Up until the 16th century, called sharks "sea dogs." Today, scientists believe there are more than 400 different of sharks in the world.

The smallest of these - the dwarf lanternshark - is less than seven inches long. The largest - the whale shark - can grow as long as 60 feet, making it the largest fish in the world. (Remember: Whales are mammals, not fish!)

Scientists believe that sharks are older than dinosaurs. The earliest known sharks existed more than 450 million years ago.

Unfortunately, it is rare to find complete fossil remains of sharks. This is because sharks don't really have .

Instead, they have skeletons made of , which is a kind of connective enough to give support but than bone. Humans have in their ears and noses.

Sharks can be found in all seas around the world. Most sharks live in saltwater, but a couple of - bull sharks and river sharks - can live in freshwater or saltwater.

Unfortunately, many shark are under attack and are decreasing in numbers every year. Experts estimate that 100 million sharks are killed by people each year.

Sharks are eaten as seafood in many areas, including Japan and Australia. Commercial and recreational fishers are believed to be responsible for the populations of some shark .

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Today's Wonder of the Day was inspired by Mackenzie. Mackenzie Wonders, " How many sharks are in the ocean? " Thanks for WONDERing with us, Mackenzie! How many stars are in the universe? How many fish are in the sea? Can these things even be counted? Or does the answer approach ?

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Sharks are fast-swimming fishes that have a skeleton made of cartilage instead of bone. (Cartilage is an elastic tissue that is created before bone begins to form.) They are...

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Facts About Sharks For Kids: Information, Pictures & Videos

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Amazing information about sharks, with pictures, videos and facts for kids. Includes shark games. Learn more about one of the ocean’s greatest predators.

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Few creatures strike more fear in humans than the great white shark. In reality, great white shark attacks on humans are rare - and it is even rarer for one of these attacks to be fatal. However, the size of the great white shark and its efficiency as a predator add to the perpetuation of this unnecessary fear.

The great white shark averages 4.5 m (15 ft.) in length, but some have been recorded as large as 6 m (20 ft.) long! They generally weigh up to 2250 kg (5000 lb.).

Great white sharks are blue-gray on the dorsal, or top, part of their bodies. This helps them blend in with the bottom of the ocean when viewed from above. The belly, or ventral, part of the body, is white. This makes it difficult to see the sharks from below, with sunlight shining in around them. They have strong, torpedo-shaped bodies and powerful tails that help them swim. Great whites can reach speeds up to 24 km/hr (15 mph).

Great whites use their speed and coloring to help them hunt. They search for prey at the surface of the ocean while swimming below. Once they spot a target, they use a burst of speed to bump their prey while simultaneously biting it. They have several rows of teeth that can number into the thousands. As teeth fall out, they are rapidly replaced by those in the row behind them. These sharp, serrated teeth can be devastating. A single, large bite can be fatal.

When great white sharks are young, they feed on smaller prey, like fish and rays. As they grow larger, they feed more exclusively on marine mammals, such as sea lions, seals and small whales.

The great white is at the top of the food chain and has few threats in the ocean. Only orcas and larger sharks can pose a risk. The only other risk to the great white shark is human interaction. They are sometimes caught by accident in fishing nets or intentionally sought out by sport fisherman. Their jaws and fins are sold for considerable amounts of money.

Not much is known about the mating habits of great white sharks. What is known is that after mating the female develops several eggs which hatch in her womb. The newly-hatched shark pups feed on unfertilized eggs in the womb as they develop before being born. In general, the mother gives birth to a litter of two to ten pups, each of which average 1.5 m (5 ft.) in length. Male great whites reach maturity at 9-10 years of age. Females mature even later, between 14 and 16 years of age. Female sharks are thought to give birth once every couple years, but even that is uncertain.

Great whites spend their time in temperate waters all over the world, although they have been known to make brief trips into colder water in the north. They live in the upper part of the ocean, towards the surface, and close to the shore, where sunlight shines through and prey is available.

Conservation Status

The great white shark is listed as vulnerable by the IUCN Red List, but it is on the cusp of being labeled endangered due to overfishing.

What You Can Do to Help

You can help great white sharks by not purchasing great white jaws or items made from their fins.

Great White Shark Distribution

Great White Shark Resources

Blog Posts about the Great White Shark

About the Author

P.A. Smith is a middle school Language Arts teacher. He is also a contributing editor of My House Rabbit.

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Great white sharks have several rows of sharp, serrated teeth that can number into the thousands. Learn more about great whites at Animal Fact Guide.

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From scary movies to beachside signs, sharks have a hair-raising reputation. But are they really as scary as they're portrayed? The truth is, only 25 species (out of 368 species) attack humans, and only about 100 people each year are attacked by sharks. More people die every year from bee stings, natural disasters such as earthquakes, hurricanes or lightning strikes, volcanoes, and tens of thousands die in car and road accidents. The bull shark is the shark most often responsible for attacks, because it swims in the same shallow waters preferred by swimmers.

Sharks are ancient animals. They've been on earth for at least 420 million years. Sharks, unlike most fish, don't have bones, but cartilage, which is a soft, sinewy substance. They have several rows of teeth and might have as many as 3,000 teeth in their mouths at one time. When one tooth falls out, another one moves forward to replace it.

Some of the most commonly known sharks are:

Fun Facts About Sharks for Kids

It's hard to see in the murky waters of the deep, but sharks have excellent vision. Their night vision is better than a cat's or a wolf's.

A shark's sense of smell is 10,000 times better than a human's.

Sharks can detect electrical impulses, including another animal's beating heart. That's a little creepy, isn't it?

Sharks are picky eaters. They often take one bite of something before they decide to go in for the kill. This is why they often swim away after "tasting" a human.

Shark Vocabulary

Learn More All About Sharks

Watch this exciting documentary video of the biggest shark that ever lived, Megalodon!

A video documentary about a historical giant shark, Megalodon.

Shark QUESTIONS & ANSWERS for kids

Answer 1: Sharks can range in size from tiny to as big as a bus. The spined pygmy shark grows only 7 inches long, while the whale shark can reach over 50 feet long. Most sharks are about the same size as a human, or slightly larger.

Answer 2: All sharks are meat eaters. Small sharks eat plankton, small animals and shellfish. Large sharks eat fish, sea lions and seals.

Answer 3: For now we know of over 500 different shark types in our waters. New species get discovered every year. Fossils found over time suggest that millions of years ago there may have been over 3000 different shark species, this would have been when water levels where much higher and the climate warmer.

Answer 4: Sharks have inner ears, they have very small openings on the side of their heads. Sharks have fantastic hearing, they are tuned into much lower frequencies than us and they can hear movement in the water from miles away.

Answer 5: A whale shark can reach over 20 meters in length making is the largest shark at present.

Answer 6: Studies to date show that a great white shark can live up to 70 years.

Answer 7: The Shortfin Mako Shark is the fastest of the shark species reaching speed of 60 miles per hour when in pursuit of prey like tuna and other fish.

Answer 8: Yes they do and even the great white has. Orca whales also know as killer whales will attack great white sharks. Although it is rare it can happen. Sharks are generally the rulers of the oceans.

Answer 9: Sharks have an amazing sense of smell. A shark can smell even a single drop of blood in the water. Just because a shark picks up a sense of blood in the water it doesn't mean it will go on the hunt. A shark will only eat when hungry.

Answer 10: Most sharks can drown, in order not to do so they need to keep moving.

Answer 11: No, in fact 97% of the shark species have no interest in us and are completely harmless. Even great white shark attacks are extremely rare.

Answer 12: The Mako and the Great White sharks are known to be great jumpers. The great white can jump up to 3 meters while the Mako shark can jump as high as 9 meters.

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