M.6/1 PIMMADA NO.2
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*SEA TURTLE*
A story of sea turtle
Sea turtles, sometimes called marine turtles,are reptiles of
the order Testudines and of the suborder Cryptodira. The
seven existing species of sea turtles are the green sea turtle,
loggerhead sea turtle, Kemp's ridley sea turtle, olive ridley
sea turtle, hawksbill sea turtle, flatback sea turtle, and
leatherback sea turtle. All six of the sea turtle species
present in US waters (loggerhead, green sea turtle, hawksbill,
Kemp's ridley, olive ridley, and leatherback) are listed as
endangered and threatened under the Endangered Species
Act. The seventh sea turtle species is the Flatback, which
exists in the waters of Australia, Papua New Guinea and
Indonesia. Sea turtles can be separated into the categories of
hard-shelled and leathery-shelled. There is only one
dermochelyid species which is the leatherback sea turtle.
eggs
adult hatchlings
sea turtle
life cycle
juvenile
The life cycle of sea turtle is typically divided into: Eggs (Nesting), Hatchlings, Juvenile
and Adult.
During the nesting season, mother turtles will come ashore to dig a hole in the sand
and lay eggs. A total number of 80 – 120 eggs are often laid. The mother turtles
return back to the sea after covering their nests with sand to ensure that they are
safe from being preyed.
Once fully developed, the baby sea turtles, also known as hatchlings, break through
their eggshells and slowly dig their way upward out of the nest. Fuelled by the
leftover egg yolk attached to themselves, the hatchlings make their way to the sea
at night to avoid being detected by predators – from the skyward and below water.
Most hatchlings does not survive to become adults due to the high number of
obstacles they face.
Hatchlings that were able to make their way to the open ocean allows them to grow
and become juveniles over a period of time. When they have bigger body size, they
will migrate to near shore to continue foraging.
After reaching adulthood, mating occurs between adult males and females. Within a
few weeks, females return to nest at the same beach where they emerge as
hatchlings, whereas the males will migrate back to the areas with food to replenish
their energy.
Threats
Coastal armoring (seawalls, rock
revetments, sandbags) sand fences, and
other barriers block access to upper beach
nesting areas.
Other important threats:
*Marine plastics ore an ingestion hazard.
Longline Fisheries hook and drown turtles
Light.
*Pollution misleads and kills hatchlings.
*Trawler Fisheries capture and drown
turtles.
*Fishing Debris entangles and drowns
turtles.
*Boat Strikes kill and injure turtles.
How to help
Although loggerheads are international marine
animals that need help throughout their range if
they are to survive, there are many things we can
do for them here at home. Make informed seafood
choices, hide lights visible from beaches, pick up
marine litter, observe nesting turtles only with a
trained guide, contribute to marine conservation
organizations, purchase a sea turtle license plate,
and share your interest in sea furtles with others.