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  1. There are more than 465 different types of sharks in the world.
  2. Great whites can detect one drop of blood in 25 gal (100 L) of water and can sense even tiny amounts of blood in the water up to 3 mi (5 km) away.
  3. Your odds of getting attacked and killed by a shark are 1 in 3,748,067. In a lifetime, you are more likely to die from fireworks or lightning. Whereas over 100 million sharks are killed every year by humans.
  4. Sharks are killed by the millions annually to supply demand for their fins, which are made into soup and eaten as a status symbol. Such demand for fins has led to overfishing and illegal fishing, depleting shark populations worldwide. Conservationists dedicate their lives to protecting animals like sharks. Send them a thank-you note for protecting species being illegally killed. Sign up for Wildlife Cards.
  5. The film Jaws — though heavily fictionalized — was based on a real incident in 1916, where four people were killed by a shark off the coast of New Jersey.

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  1. Great white sharks eat 11 tons of food a year while the average human eats closer to half a ton of food each year.
  2. Whale sharks are the world’s biggest fish.
  3. Sharks mature slowly and reach reproductive age anywhere from 12 to 15 years.
  4. Sharks have been swimming in the ocean for more than 400 million years.
  5. Hammerhead sharks' eyes are on the sides of their heads, so they have nearly a 360-degree sight line. Their panoramic view of the undersea world is inhibited by two blind spots, one in front of the snout and the other directly behind the head.
  6. Sharks predate the dinosaurs by 200 million years.

Sources

  • 1

    Defenders of the Wild. "Basic Facts About Sharks." Web Accessed April 5, 2015.

  • 2

    National Geographic. "Great White Sharks." Web Accessed April 5, 2015.

  • 3

    International Wildlife Museum. "What are the odds of a shark attack?" Web Accessed April 5, 2015.

  • 4

    Edmonds, Molly. "Shark Facts vs. Shark Myths." World Wildlife Fund. Web Accessed April 5, 2015.

  • 5

    Shark Guardian Shark and Marine Conservation Projects Worldwide. "Shark Facts – Shark Guardian top 100." Web Accessed April 10, 2015.

  • 6

    Shark Guardian Shark and Marine Conservation Projects Worldwide. "Shark Facts – Shark Guardian top 100." Web Accessed April 10, 2015.

  • 7

    National Geographic. "Whale Sharks." Web Accessed April 10, 2015.

  • 8

    Defenders of the Wild. "Basic Facts About Sharks." Web Accessed April 10, 2015.

  • 9

    Shark Guardian Shark and Marine Conservation Projects Worldwide. "Shark Facts – Shark Guardian top 100." Web Accessed April 10, 2015.

  • 10

    Discovery News. "Hammerhead Sharks Have Stereo Vision." 2013. Web Accessed April 10, 2015.

  • 11

    Defenders of the Wild. "Basic Facts About Sharks." Web Accessed April 10, 2015.

Send thank you cards to rangers who protect endangered species.

DO IT