Crittercam: Tiger Sharks

  • At the western edge of Australia’s Outback, Wild Chronicles joins National Geographic’s Crittercam® to explore the warm, summer waters of Shark Bay, home to thousands of tiger sharks. Lurking in the coral reef’s vast seagrass beds, the opportunistic hunter eats anything and everything. But, as Crittercam® discovers, tiger sharks also keep this fragile ecosystem in balance.

    1. Tiger sharks are just one part of the ecosystem of Shark Bay. What else is part of the ecosystem?

      Coral reefs, seagrass, fish, dolphins, turtles, and dugongs are all native to Shark Bay.

    2. How many sharks has Mike, the biologist, tagged in Shark Bay?

      Mike has tagged more than 250 sharks.

    3. Besides a camera, what other equipment does Crittercam carry?

      Crittercam instruments measure the depth and temperature of the water in Shark Bay.

    4. What is "Gut Cam"?

      Gut cam is a device for looking into a shark's stomach to see what it has eaten.

    5. How do tiger sharks help keep the Shark Bay ecosystem in balance?

      Dugongs and turtles eat tons of seagrass, the primary producer for the Shark Bay ecosystem. Tiger sharks help control these populations, allowing seagrass to flourish.

  • Term Part of Speech Definition Encyclopedic Entry
    coral reef Noun

    rocky ocean features made up of millions of coral skeletons.

    Crittercam Noun

    camera designed to be worn on a wild animal, providing a "critter-eye view" of the animal's environment.

    ecosystem Noun

    community and interactions of living and nonliving things in an area.

    Encyclopedic Entry: ecosystem
    fragile Noun

    delicate or easily broken.

    Outback Noun

    remote, sparsely populated interior region of Australia.

    seagrass Noun

    type of plant that grows in the ocean.

    shark Noun

    predatory fish.

    vast Adjective

    huge and spread out.