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More people are killed each year by pigs than by sharks More people are killed by bee stings than by being killed by a shark More people are killed by being hit on the head by a coconut than being attacked by a shark.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoDolphins can scare sharks by tapping it rappidly with its tail. Narwhals exisit! they eat fish, squids, shrimp, and 5% humans! dolphins can live in rivers, which is called fresh water dolphin.
Wiki User
∙ 10y agoApart from the obvious - that sharks are cold-blooded vertebrates, classified as fish, which breathe through gills rather than lungs - there are many things scientists have learned about sharks.
Sharks generally have five rows of teeth with about 46 teeth in each row. Depending on the species, they have an average total of 230 teeth. For example, Great White Sharks can have 50,000 teeth in a lifetime. These teeth are set in layered rows with 5 to 15 in both upper and lower jaws. The teeth do not have a root so they break easily. The teeth are arranged in rows of 5-7 teeth like a conveyer belt. When a tooth falls out from the front the tooth from the next row moves up to take its place. At any time a white shark will have about 300 teeth in various stages of development within its jaws.
There are over 470 species of sharks. Many species of sharks are apex predators, meaning that they are at e top of the food chain. Unfortunately, this also means that they are hunted in large numbers by Man as killers. Because they have low rates of reproduction, and the young sharks grow slowly, this means their populations may be threatened or, in the case of some species, endangered.
Sharks have special types of placoid scales known as dermal denticles. These are different to normal fish scales, being tiny tooth-like structures which protect the shark from injury and parasites.
A great many more scientific facts about sharks can be found at the related link below.
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What have scientists learned about the elephant shrew on DNA evidence?
Most elephant shrew species were first described in the 1800s by scientists who classified them as shrews because of obvious physical similarities.
Can sharks live in swamps?
Yes. The only Shark that lives in the tundra (Antarctica) and has been studied by scientists is the Salmon Shark. They have special skin that protect them from freezing.
Can you name 8 types of sharks?
megalodon sharks, great white sharks, frilled sharks, thresher sharks, tiger sharks, sand tiger sharks, lemon sharks, bull sharks, whale sharks, basking sharks, lepord sharks,black tip sharks. there is 12.
What sharks have a urinary tract?
Mako sharks, thresher sharks and Great white sharks
What do nurse sharks get called sometimes?
Sometimes, Nurse sharks are called giant sleepy sharks. Sometimes, Nurse sharks are called giant sleepy sharks.
How big is a sharks leg?
You probably never learned this because SHARKS DON'T HAVE LEGS!!
What is the simple predicate in The scientists have learned respect for the insects?
have learned
What are sharks are known to eat?
Anything and everything. Scientists have found license plates in sharks.
What have scientists learned from telescopes?
They have learned that Earth revolves around the Sun.
Do scientists die looking at sharks?
because they like eating scientists they like their legs <--------&
List three things that scientists learned about earth in the 1800s?
list three things that the scientists learned about earth in the 1800's?
Who studies tiger sharks?
Scientists and people who learn about them
What have scientists learned after close study of the chemical structure of the cell and its nucleus?
What have scientists learned after close study of the chemical structure of the cell and its nucleus?"
What did scientists learn from the icemans copper ax?
Scientists learned that the iceman's copper ax was made using advanced metalworking techniques for its time, suggesting a sophisticated level of technology. The analysis of the ax also provided insight into the trade and exchange networks of the Copper Age, as the copper used in the ax was not local to the region where the iceman was found.
What are Examples of learned behaviors in sharks?
Hiding, swimming, and learning to migrate.
Do hammerheard sharks have babies?
No, they are just cloned by underwater scientists.
How do scientists know whale sharks are sharks?
because of the tail whale tails are horizontal and shark tails are vertical
