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TURTLES!!!

TURTLES!!!. Turtles. Tortoises. Dwell in the water Mostly flat shells Relatively light shells Omnivores Life span of 20-60 years Oldest was 86 years. Tortoises dwell on the land Mostly dome shamed shells Very heavy shells Herbivores Life span of 80-150 years Oldest was 326 years.

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TURTLES!!!

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  1. TURTLES!!!

  2. Turtles Tortoises • Dwell in the water • Mostly flat shells • Relatively light shells • Omnivores • Life span of 20-60 years • Oldest was 86 years • Tortoises dwell on the land • Mostly dome shamed shells • Very heavy shells • Herbivores • Life span of 80-150 years • Oldest was 326 years Turtle vs. tortoise

  3. Turtles Tortoises

  4. Turtle man  http://www.youtube.com/watch?v=jE1ii2NNMc0 Call of the Wildman

  5. Characteristics • Breathe through lungs • Can hold breath up to 3 hours • Cold blooded • Dry skin with scales • Two pairs of legs (except snakes) • Three chambered heart (except crocs and allis.) • Internal fertilization • External development (eggs) Turtles are reptiles

  6. There are 8 species of turtles out there! Species Kemp Ridley Hawksbill

  7. 8 species Green Leatherbacks Flatback

  8. 8 species Pacific black loggerhead Olive Ridley

  9. Most species are omnivores • Hawksbill eats only sponges • Leatherbacks eat only jellyfish • They do not have teeth, just a large beak. • Most common items they eat are crabs, sea grass, jellyfish, seaweed, etc. Diet

  10. Digestive System

  11. The turtle shell is made out of two parts • Carapace (top) • Plastron (bottom) • The shell is made up of many, many bones! Anatomy

  12. Flip your turtle over… • If the shell is convex (pokes out), it is a female. • If the shell is concave (pokes in), it’s a male. Male or female??

  13. Turtles heart can continue to beat outside of their body! http://www.youtube.com/watch?v=lmhBEeEMqYo Anatomy

  14. Male or female? • Another way to tell • Male turtles have thicker and longer tails • Males also have the cloaca farther away from their body. REproduction

  15. Surprisingly, the male turtles have a sexual organ just like mammals. The organ protrudes through the cloaca when filled with a fluid. Sometimes, the males use their organ as a sign of dominance while relaxing. Reproduction

  16. The females have all the normal internal organs to reproduce. • The males mount the female from behind and insert his organ into her cloaca. • Some females can store sperm in the oviducts for months at a time • The female is fertilized in the oviducts just as any mammal. Reproduction

  17. The female will lay eggs on a beach in the sand and will never return for her young. • http://www.youtube.com/watch?v=ndXJyvG0SIg • The gender of the turtle while developing is based on the temperature of the nest. • Cooler temperatures favor the development of males. • It takes eggs about 7 to 10 weeks to hatch, depending on temperature. Eggs

  18. Yes it’s very true! Due to coastal development, harvesting of eggs, and climate change, boat traffic, and sea pollution our turtle population has significantly decreased. Endangered?

  19. http://www.youtube.com/watch?v=d7WtduFycDY thee living planet-open ocean

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