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Turtle Assembl y
 

Turtle Assembl y

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    Turtle Assembl y Turtle Assembl y Presentation Transcript

    • Pacific Leatherback Sea Turtles A Presentation By 3A and 3B
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    • Leatherback Range
      • 60 days to the Galapagos Islands where they winter and mate
      • Nest in Costa Rica
    • The Diving Machine
      • Deepest diving reptile
      • 4000ft and deeper
      • Leather-like shell that compresses under deep water pressure
      • Fatty insulation helps control body temp
      • Stays under water for 80 minutes
    • Threats to Diving
      • Hooks from long line fishing
      • Fishing nets
    •  
    • Decline 1980: 200 turtles a night 7 days in a week 7 x 200 =1,400 turtles in a week 2011: 3 turtles in the week
    •  
    • Size Comparison
    • Turtle Decline
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    • Leatherback munch on jellyfish!
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    • Nesting
      • Females come every 2-4 years to lay
      • Return every 9-10 days
      • Lay 50-85 eggs
      • Lay largest eggs of all turtles
      • Billiard-size eggs
      • Laying takes 1.5-2 hours
    • Threats to Nests
      • Human poachers take eggs
      • Dogs
      • Raccoons
      • Coatis
      • Houses built near nests that produce white lights
      • Bright lights from cars
    • Hatchlings
      • Take 60 days to develop
      • Largest of all turtle hatchlings
      • 57% success rate of hatching normally
      • Temperature determines sex
      • After hatching, they swim vigorously for
      • 6-8 days to get to the main currents which take them to their feeding ground
    • Threats to Hatchlings
      • Raccoons
      • Birds: pelicans, ospreys, seagulls
      • Fish
      • Nests that are too shallow so they get too hot and eggs die
      • Crabs
      • Nests too near water line so they drown
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