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  • Sharks Have No Bones on Random Fascinating Facts About Sharks That Most People Don't Know

    (#12) Sharks Have No Bones

    Sharks are certainly not spineless creatures, though they are boneless. A shark's skeletal system is made up of cartilage, a strong and flexible material that is less dense than bone. Because sharks don't have a "swim bladder," meaning they don't have an internal system to maintain buoyancy, having a cartilage skeleton requires less energy to stay afloat and not sink to the bottom of the ocean.  

    If a shark were to die, the chances of finding its skeletal remains are slim because the salt in the water is likely to erode the cartilage at a rapid pace. 

  • Sharks Can Sense Blood In The Water Over Half A Mile Away on Random Fascinating Facts About Sharks That Most People Don't Know

    (#10) Sharks Can Sense Blood In The Water Over Half A Mile Away

    You may have heard that sharks are attracted to blood in the ocean, but did you know they can smell a few drops of blood in the water from as far as half a mile away? Sharks have a keen sense of smell, thanks to their highly developed sensors known as olfactory receptors. When the scent of blood molecules passes over the shark's sensors, it immediately knows where to turn to follow the trail. 

  • Sharks Have Roamed The Earth's Waters For Over 419 Million Years on Random Fascinating Facts About Sharks That Most People Don't Know

    (#4) Sharks Have Roamed The Earth's Waters For Over 419 Million Years

    Sharks have been around for over 419 million years and have adapted to increase their survival rates. For example, the great white is recorded as the largest predatory fish in the ocean, averaging 15 to 20 feet long. While great whites may sound intimidating in stature, there was an even larger predatory shark that lived millions of years ago called the megalodon

    Megalodons resembled the great white in every aspect, save for its immense size. In length alone, the megalodon was said to have grown up to 59 feet!  

  • Shark Teeth Are Cleaner Than You Think on Random Fascinating Facts About Sharks That Most People Don't Know

    (#8) Shark Teeth Are Cleaner Than You Think

    After eating schools of fish and devouring oceanic carcasses, you would think that shark teeth were far from being pearly white. But in actuality, a shark’s teeth are cleaner than you would expect because shark teeth are covered in fluoride. This makes them cavity-resistant against bacteria.

    Add that to the fact that sharks replace their teeth consistently and the result is some major dental protection. 

  • Tiger Shark Pups Eat Their Unborn Siblings on Random Fascinating Facts About Sharks That Most People Don't Know

    (#14) Tiger Shark Pups Eat Their Unborn Siblings

    A pregnant tiger shark has not one uterus, but two uteri with which she will birth two live pups. However, upon conception, tiger sharks actually carry up to 12 healthy embryos in their womb. So why only two babies? While in the mother’s womb, the first tiger pups to emerge from their embryonic sacks will eat their siblings.

    It had long been suggested that this bloody act of sibling carnage was just survival of the fittest. However, research shows that a mother typically mates with multiple males, which results in the embryos developing at different stages. The oldest babies thus emerge first, usually hungry, and end up eating their siblings.

  • Sharks Use Electric Fields To Detect The Heartbeat Of Prey on Random Fascinating Facts About Sharks That Most People Don't Know

    (#3) Sharks Use Electric Fields To Detect The Heartbeat Of Prey

    Sharks have special sensory organs known as ampullae of Lorenzini, which are deep pores found around their snouts. The ampullae are sensitive electroreceptors that help with hunting. A shark uses this electroreception sensory system to detect electrical activity that fluctuates from its prey, such as a creature’s beating heart.

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After rendering in various movies and books, the shark has become a symbol of the killer. Sharks are a kind of ancient cartilaginous fishes that live in the ocean, It is a group of fastest medium and large marine fish whose huge bodies and their status as predators at the top of the food chain really make them one of the overlords in the ocean. Learn more about sharks is the first step in taking protective measures.

The random tool lists 15 fascinating facts about sharks that you may never know, welcome to share this important knowledge with friends. You could also search for other interesting topics in this tool.

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