Download Sea turtles

Which is a
Tetrapod?
Coelacanth
Latimeria
chalumnae
Reptiles
&
Birds
First:
Live in Water
100%
Sea Snakes
• Swim with a flattened paddle-like tail
• Most venomous of all snakes
• Not inclined to bite however and
have very small fangs
• Considered a delicacy in parts of Asia
Reproduction
• Ovoviviparous (mother carries eggs
and babies born alive IN water).
NEXT:
Live in Water
Lay eggs on Land
99% / 1%
Sea turtles
Sea Turtles
• Live more than 80 years
• Become sexually mature around 30 y.o.
• Sea Turtles mate in same area of ocean as
their own birth
• Female leaves water to lay eggs on EXACT
same beach as she was born
• Use earths magnetic field to travel
• Marine Turtles go in a “coma” when laying
eggs
• Temperature of nest determines sex of
hatchlings
Nesting
Sea Turtles
• 30 degrees C is the determining
temperature
• Below 30 degrees is male
• Above 30 degrees is female
• Hatchlings hatch in 7 to 8 weeks
• High mortality rate
Conservation
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Early sailors used them for long term food.
Considered a delicacy even today
Skin used for leather
Shell has decorative uses
Millions of eggs are collected as food
RESULT – All species are endangered
Beach Development = Death
NEXT:
Eat in Water
Live on Land
50% / 50%
Marine Iguana
Marine Iguana
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Length: 2 to 3 feet long
Diet: Vegetarians
Razor sharp 3 cusped teeth
Hold breathe for 30 minutes
Very good swimmers
Flattened tail
Have ability to re-rout blood to center of
body
• Must leave water to warm up
Salt Water Crocodile
Salt Water Crocodile
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Largest of all reptiles
Max size 23 feet and 2500 pounds
Lifespan more than 70 years
Can outrun a human on land
Can swim 20 mph
Diet – anything
Hundreds of humans are killed each year
BIRDS
• Fly
• Feathers
• Lay eggs
CORRECT?????
FLY???
Birds
• Covered in Feathers
• Has beak
• Strong/Light weight skeleton (hollow bones)
• WARM BLOODED
Molting
Flight
• Makes Birds unique
• Some birds migrate VERY long distances
annually
Arctic Tern
Sooty Shearwater
Conservation
• Birds and eggs collected for food (still today)
• Pollution (oil spills & chemicals like DDT)
• Introduced species VERY BAD (humans, cats,
rats, snakes and cattle)
• Many species are Threatened
Penguin Conservation
In 2001, two dogs were
responsible for the deaths
of 72 blue penguins in a
wildlife reserve