Marine Birds and Reptiles - PowerPoint PPT Presentation

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Marine Birds and Reptiles

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  1. Marine Birds and Reptiles

  2. Characteristics of Birds and Reptiles • Birds: • Lay shelled eggs • Breathe O2 from air • Have oiled feathers to protect them from environment • Endothermic • Reptiles: • Lay shelled eggs • Breathe O2 from air • Have scales and thick skin to protect them from environment • Ectothermic

  3. Sea Turtles • There are 7 species of sea turtle. 5 are endangered. • Live most of their lives in the open ocean. • Return to land to nest. • Turtles nesting in Florida include green sea turtles and leatherback turtles. • Have developed streamlined bodies and flippers to adapt to their marine lifestyle.

  4. Leatherback Turtles • Largest sea turtles alive today • Eat jellyfish almost exclusively • Shells are not solid bone • Often migrate long distances for food

  5. Sea Snakes • 62 species live in the Indian and Pacific Oceans • More poisonous than land snakes • Grow between 4 and 5 feet long • Live very close to shore • Tend to be very docile

  6. Marine Adaptations • Have flattened bodies to help swim • Can absorb oxygen through their skin but cannot move on land • Have lacrimal salt glands • Most lay eggs in the water (Laticauda)

  7. Marine Iguanas • Live only on the Galapagos Islands • Dive up to 30 ft. to forage for algae • Uses mucous glands in its nose to expel salt • Must warm itself after a dive • Will shrink without food

  8. Saltwater Crocodile • Only one species in Southeast Asia, one in the Americas • Males average 15-17 ft. long, females ~10 ft. • Apex predator throughout its range • Mating pairs stay together during incubation, female cares for young • Asian species extremely dangerous to humans

  9. Marine Adaptations • Have lacrimal salt glands • Asian species can cross large distances of ocean

  10. Penguins • 17-20 species • Live throughout the Southern Hemisphere • From 1 ft. to 4 ft. tall • Spend around half their time on land • Active hunters; eat fish and squid