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Green Sea Turtles

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by

Bryan Ho

on 4 February 2011

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Transcript of Green Sea Turtles

Green Sea Turtles. Structural Adaptations. Strong, paddle like flippers
are used to quickly swim away
from predators. Their front and back limbs have evolved, making them very efficient swimmmers. Green Sea Turtles swim using wing like beats to move forward. Green Sea Turtles have very strong core bodies so they can migrate very long distances to arrive to their nesting sites. Some turtles swim even miles to get to a safe and preffered spot. These turtles have very light, smooth, streamlined shells to glide along the currents. Green Sea Turtles can stay under water for as long as 5 hours. This is because these turtles can slow their heartrates to conserve oxygen. Their heartrate can become so slow that nine minutes can pass between each elapse. Behavioural
Adaptations. Green Sea Turles
are often seen basking
in the Sun for long hours
to heat up their bodies.
They do this so they are able
to move more quickly in
the water. After their bodies are
warmed up they jump back into the
water and escape their predators.
Being cold-blooded, things tend to
move more slower
than warm-blooded organisms.
Green Sea Turtles mate near the surface of the water and to nest, the turtles leave the sea and dig a pit in the sand so predators can't find them. The Green Sea Turtle may nest at several different beaches so more babies are able make it to the ocean. Burying the eggs in the sand keep the eggs moist and helps maintain proper temperature. When Sea Turtle hatchlings are born, they run toward the Moon's light to direct themselves to the ocean for shelter. When they are in the water, they figure out which way their going by using Earth's magentic strength. The magnetic strength orients the turtle's in the water and helps them choose what currents are best. http://farge.wikispaces.com/ABANTO,+MARITONI+L http://www.worldofstock.com/closeups/NAN8123.php http://www.flickr.com/photos/21550937@N03/3768698393/ http://www.seaturtlenet.com/GreenSeaPicture.asp http://latimesblogs.latimes.com/unleashed/2009/11/82-sea-turtles-hatch-without-human-help-at-seaworld-in-san-diego.html http://www.eco-h2o.co.za/page/12/ http://animals.nationalgeographic.com/animals/reptiles/green-turtle/ Sources for info http://animals.nationalgeographic.com/animals/reptiles/green-turtle/
http://www.seaworld.org/animal-info/info-books/sea-turtle/adaptations.htm http://www.seaworld.org/infobooks/SeaTurtle/stadapt.html http://www.earthtrust.org/wlcurric/turtles.html http://www.arbec.com.my/sea-turtles/art13julysept01.htm http://www.seaworld.org/infobooks/seaturtle/strepro.html Sources For Pictures. Sources Are Listed below when you zoom out. Bryan Ho 9-19. Title: Green Sea
Turtle. Author: National GeoGraphic. Title: Sea Turtles Adaptations for an aquatic environment.
Author: seaWorld.org Title: Sea Turtles Adaptations for an aquatic environment.
Author: seaWorld.org Title: Green Sea Turtles.
Author: Earthtrust.org Title: The Migratory Behaviour of Hatchling Sea Turtles Beyond the Beach
Author: Jeanette Wyneken Title: Sea Turtles Adaptations for an aquatic environment.Author: seaWorld.org Chelonia Mydas Related Species Eretmochelys imbricata The Hawksbill Sea Turtle is a type of turtle typically
found in the tropical waters of Atlantic, Pacific
and Indian oceans. This sea turtle tends to avoid deep
waters as they try to keep sandy nesting areas very close.
The Hawksbill Turtle gets it's name from their tapered head,
which resembles a bird's beak. Similar to the Green Sea Turtle,
the Hawksbill migrates very long distances to reach a preffered
nesting site. Carreta carreta Loggerhead Sea Turtles are the most abundant
turtle in U.S waters. These Sea Turtles have very
big heads with reddish-brown shells. Loggerheads
are mainly carnivorous, eating jellyfish, crabs,
and even fish. Mature Loggerheads will often
return to the beach where they had hatched their
eggs. Adult males reach about one meter long and
weigh about 250 pounds. Loggerhead Turtles
prefer to swim in warmer waters and they tend to
dwell by coastal habitats. Habitats and Niches The Green Sea Turtle is found very generally in warm tropical waters across the world. They swim around the more shallow waters though they only leave waters to lay their eggs. The Green Sea Turtle has a narrow niche
because of its marine habitat.The ocean can have
very small changes to the environment, but when
it is changed drastically the turtle can't survive in its
environment. The Green Sea Turtle relies on seagrasses
and algae for food, which only can be found in aquatic
enviroments. These Sea Turtles have many adaptations
that could benefit them in a marine environment,
but if moved to a different environment, these
adaptations could hinder them. Why is the Green Sea
Turtle endangered? Green Sea Turtles are overhunted across the world for
their meat and eggs. The shells for these turtles are
used to make jewelery and ornaments and the fat
of these reptiles are collected for oil. Green Sea Turtle skin is
used for leather goods and clothing. These days, the cost of the turtles have increased dramatically due to the opportunity for the
profits they provide in commercial trade.

Green Sea turtles take
about 20 years to reach sexual maturity, so population recovery
could take a very long time. These turtles are also caught mistakenly by
other fisherman and end up being killed. The pollutants and trash
we put into our water end up inside turtles, suffocating and poisoning
the population. If the Green Sea Turtle was extinct then the
entire food chain in the aquatic and land
environment would be impacted negatively.
When the Green Sea Turtle is not able to
feed off the algae in it's environment, an
increased growth could lead to a drastic
lack in oxygen. Algae removes oxygen from
the environment, therefore reducing the
ability to sustain life in the area. The
lack of oxygen would suffocate the fish and
any other animals would die. With the depletion of fish in the area, land animals
that rely on food from an aquatic environment will
starve and eventually die. Also, with the Green Sea
Turtle industry all gone the economy in the area could
lower.
A zoo environment for a Green Sea Turtle would most likely
be in warm, tropical open waters. These turtles are cold blooded,
so the water should be heated constantly. The environment should
have sea grasses and other natural plants so the turtle could still
maintain its ability to get food for itself. The habitat should
have a sandy location nearby, so the Turtle can nest its eggs.

This environment would have open windows, so the sand can
be heated by the Sun, as these eggs need a warm and moist
environment. This habitat compared to a natural one would
be almost exact, as almost all conditions meet the ones needed
for a sea turtle to survive. Although, the distance female
Sea Turtles need to swim to find a hatching spot is gone and
resources needed to survive are not as scarce.
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