| TURTLE
NESTING |
| Species |
Season |
Location |
| Leatherback |
Oct.-Mar. |
Pacific |
| Ridley |
Sept.-Nov. |
Pacific |
THE LEATHERBACK TURTLE (DERMOCHELYS CORIACEA)
Leatherbacks
are a species of turtle that have literally been around for millions
of years. Leatherback turtle bones have been found and dated back
to slightly over 100 million years.
Today
this species is in peril, and a variety of organizations and governments
are working hard to prevent them from going extinct.
The leatherback turtle
is a turtle on the move. Each year these amazing turtles migrate
hundreds of miles through open oceans. Every 3-4 years, female
turtles return to their nesting spots along the Pacific coastline
of Costa Rica to lay their precious eggs. Note: each year there
is nesting, but individual females only return every 3-4 years.
When the females come into nest they come out of the water and
spend just enough time to lay their eggs and return to water.
The males of the species never leave the ocean waters. If a female
were to live long enough, it could come back and forth over a
period as long as 25-30 years. Unfortunately the majority do not
last this long due to contact with man.
While adults have very few
natural predators, the young have a tough time early on. Birds
and fish love to feed off the small turtles soon after they hatch.
Many turtles never make it past this stage.
If you have a chance to see
these turtles lay their eggs during nesting season in Costa Rica
it really is something special.
Interesting Facts About The Leatherbacks
- Leatherbacks love to eat jellyfish. Their
beak is actually specially designed to help them eat their favorite
food!
- Leatherback turtles lay both yolked and
yolkless eggs.
- The temperature inside the sand where the
eggs are buried determines the sex of the turtle.
- Instead of having a hard shell like most
turtles, the leatherback has a shell that is actually more leatherlike
as opposed to a shell. Ie the name leatherback turtle.
THE PACIFIC OLIVE RIDLEY (LEPIDOCHELIS OLIVACEA)
Of
all the species of sea turtles, the Pacific olive ridley is the
most abundant. However like many other species of sea turtles
they are feeling increasing pressures, and as such their overall
numbers are in decline.
The oliver ridley tends to
be found in tropical waters around the world. In the Americas
major nesting sites are found in Mexico and along the Nicoya Peninsula
in Costa Rica. In general the species tends to be found in coastal
areas, though at certain times large groups have been seen out
in the open ocean. Not a lot is known about this turtle. Scientists
observe nesting habits, but once the turtles are back in the waters,
very little is actually known about their habits.
Scientists are not sure of
what constites a good diet for the turtles. However examination
of some turtles indicate a preference for jellyfish, small fish,
and small crabs.
This species of turtles is
well known for nesting in mass. It is not uncommon to see thousands
of turtles come ashore at the same time to lay eggs. This occurance
is known as arribadas, and in Costa Rica occurs at Playa Nancite
in the Santa Rosa National Park.
Seeing the turtles come ashore
to lay their eggs is the highlight of many people's visit to Costa
Rica. .
Much
of the information on our site as it relates to Costa Rica is:
Courtesy
of Christopher P. Baker and Avalon Travel Publishing.
© 2004 Christopher P. Baker. All Rights Reserved.
Spanish Abroad, Inc. highly
recommends Christopher P. Baker's book: Moon
Handbooks Costa Rica. Click on the image to visit
his website where you can purchase this book or find out more
about the author.
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