Hitching a Ride



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tarix11.04.2018
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Hitching a Ride

  • Hitching a Ride


On the previous slide you saw a Crittercam-wearing emperor penguin plunging into a dive hole at the Penguin Ranch research station in Antarctica. Crittercam video has shown how some emperors hunt beneath the ice: They swim down deep, look up to see fish silhouetted against the glowing ice, then shoot up to snatch their prey!

  • On the previous slide you saw a Crittercam-wearing emperor penguin plunging into a dive hole at the Penguin Ranch research station in Antarctica. Crittercam video has shown how some emperors hunt beneath the ice: They swim down deep, look up to see fish silhouetted against the glowing ice, then shoot up to snatch their prey!



What is Crittercam?

  • What is Crittercam?

  • National Geographic's Crittercam systems are research instruments worn by wild animals. The systems allow scientists to learn how animals use their habitat, where they feed and how they interact with animals of their own species and of other species. We also learn how they communicate, how they mate, how they move and how they hunt and feed. We can learn how deep marine animals dive and why they stay under water as long as they do.





How was Crittercam invented?

  • How was Crittercam invented?

  • In 1986, while diving off the coast of Belize, marine biologist Greg Marshall encountered a shark. The shark approached him, then disappeared with three quick strokes of its tail. Stuck to the shark's belly was a remora fish. As Greg watched the shark disappear, it occurred to him that if he could put a camera in place of the remora, he could learn about the shark's behavior.

  • Inspired, Greg built the first Crittercam and deployed it on a sea turtle in 1987. The turtle behaved normally—the first indication that this type of system had potential as a research tool.



What animals have worn Crittercams?

  • What animals have worn Crittercams?

  • Crittercam has allowed scientists to study more than 50 species of sharks, sea turtles, whales, seals, and penguins. With the development of a terrestrial Crittercam, scientists have begun research programs working with lions, hyenas, and grizzly bears. Scientists have been able to study some biological mysteries, including the following: How do humpback whales hunt together? Why do blue whales call? Where do Hawaiian monk seals find their food? How do harbor seals stake out territory? How do emperor penguins hunt? Where do sharks stalk their prey? When do leatherback turtles mate?









How do you attach Crittercam to an animal?

  • How do you attach Crittercam to an animal?

  • The method depends on the species.

  • For whales, dolphins, and leatherback turtles, special suction cups are used.

  • With seals and hard-shelled turtles a small adhesive patch is used.

  • Custom-tailored, backpack-like harnesses do the job for penguins.

  • A fin clamp keeps Crittercam swimming with sharks.

  • For land animals such as bears, lions, and hyenas, a Crittercam collar is used.











Television. 

  • Television. 

  • Water skis. 

  • Earmuffs.

  • The Popsicle. 

  • What do they have in common? 

  • All were invented by kids!

  • 500,000 children and teens invent gadgets and games each year. These innovations help make our lives easier – and more fun! 

  • Celebrate the ingenuity and value of young brainstormers on KID INVENTORS’ DAY!









Read about it. 

  • Read about it. 

  • Write about it. 

  • Host an Invention Convention. 

  • Start a Young Inventors’ Club.

  • Enter a contest. 

  • Keep an invention journal.  Or, better yet:  design your own invention!





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