1. Behavior and Conservation Marine Turtles

2. Reproduction Mate in the water Appear to rely on visual cues for species and sex recognition Oviparous

3. Nesting Behavior A few weeks after mating:

4. Nesting Behavior Egg pit

5. Arribada

6. Growth and Development Shell protects embryos from desiccation

7. Growth and Development Sex determined by temperature 3 Types A – most crocs and some lizards B – many turtles C – crocs, lizards and some turtles

8. Growth and Development Marine Turtles MaleFemale

9. Growth and Development Caruncle

10. Migrations Macrogeographic migrations Loggerhead http://www.seaturtle.org/sandbox/animalma p.html

11. Migrations Green Turtle Ascension Island

12. Migrations Navigational Cues Earth’s magnetic field Water-borne Auditory Wind-borne

13. Conservation Many are threatened and endangered: Loggerhead = Threatened Green = FL and P. coast of Mexico Endangered; all others threatened Hawksbill = Endangered Kemp’s = Endangered Leatherback = Endangered

14. Conservation Management and Protection Beach habitat protection Lighting ordinances End plastic pollution

15. TED’s Turtle Excluder Device