| A Cosmopolitan Lifestyle
Leatherbacks migrate hundreds of miles every year. Males never
leave the water, but females come back to land for a short
time (1.5 hours) to lay eggs. Each female leatherback has
the potential to nest up to ten times in one nesting season,
and return every 3-4 years for as long as thirty years! No
leatherback on the Pacific coast of Costa Rica, however, lives
long enough to make this kind of contribution to her species.
Most Pacific leatherbacks only nest once because they are
killed at sea.
A
Life in Peril
Adult leatherbacks have few natural predators, but hatchlings
are a favorite prey of many animals from the time they hatch
on the beach until they are grown. Their species has survived
for millions of years, so why are they declining now? The
answer is humans. Humans are the greatest danger that leatherbacks
face. Untold numbers of adult leatherbacks die each year from
drowning in fishing nets or on fishing lines. More acres of
nesting beaches are lost every year to development for the
tourist industry or for private residences. Eggs are stolen
from nests to be sold on the black market as aphrodisiacs.
Pollution can affect both adults and turtles in the egg. Scientists
estimate that only 1 in 1000 leatherback hatchlings survive
to adulthood.
Knowledge is Power
Scientists come to Costa Rica from all over the world to study
the leatherback. They hope that knowledge of its biology,
nesting habits, and early development will give us all the
tools we need to preserve this national treasure. A management
program built on a foundation of scientific information may
be the answer to the complex problems that leatherbacks face
in today's world.
Did you know?
- a leatherback's favorite food is jellyfish. They even
have a special notch in their beak to help puncture the
man-o-war jellyfish.
- leatherbacks in Costa Rica lay two kinds of eggs: yolked
and yolkless
- the temperature in the nest determines if a hatchling
will be a boy or a girl
- a leatherback's shell is covered by a leathery skin
- the "tears" that turtles "cry" are
just their way of shedding excess salt
Be a Friend to the Leatherback
DO NOT:
- drive or walk on the beach above the high tide line- this
crushes eggs and hatchlings in the nest!
- walk on the beach at night- this scares turtles away
- walk/stand in front of turtle
- plant anything on the beach or dunes
- use lights on the beach
- use flash photography or video around a turtle
- buy products made from turtles
DO:
- speak very softly if near a turtle
- use red lights instead of white on the exterior of your
house if it is visible from the beach
- tell a park official if you see any practices that may
be harmful to turtles
- appreciate this fascinating animal
- share your knowledge of leatherbacks with others
Leatherback Images
View a series of Leatherback
images taken by Nature & Wildlife
photographer, Herb Segars.
Mr.
Segars explains how he came to take these amazing photos:
"The photos were taken a few years ago off North Carolina.
The turtle had been caught in a longliner's line and was
cut free but still had the float attached. I was with a
group of divers on a boat out of Cape Hatteras. We got
into the water when the longliner's line became fouled
in the boat's prop. It happened accidentally when the turtle
went under and came up very close to the boat. One of our
members was able to get right up to the turtle and cut
the line. His first try scared him as he got close and
saw the size of the head on the turtle. What happened next
was great. The turtle took a stroke with her fins and stopped,
waiting for the pull of the bouy. When it didn't feel anything,
it took another stroke and stopped. Feeling no resistance,
it started swimming away. We all hoped that the damage
to its body healed after the float and lined were removed."
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Learn more about the
leatherback...
Explore the nesting behavior
of the leatherback, development and hatching of leatherback
eggs, and more...
Leatherback
Biology |
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