Sea Turtle Nesting Basics
Saturday, November 24, 2007
We have Leatherback turtles nesting right now in
Bocas del Toro Panama so here is some basic
information on nesting for all sea turtles.
Female sea turtles instinctively return to the same beach as they were born to nest each year. Sometimes they even emerge from the ocean less than one hundred yards from the spot in which they were born.
Eggs are generally laid one month after mating and almost always during the cover of night on a deserted beach. Any light other than natural moonlight and starlight can be seen by the turtles and will cause the turtle to turn back to the sea to wait. Even the most subtle match strikes can be detected.
Sometimes a turtle will abandon a nest if she encounters an obstacle or if the sand does not have the right consistency or moisture content. Another turtle may nest regardless of what else is going on around her. If a turtle fails to nest and returns to sea it is referred to as a “false crawl”
Most females nest at least twice during a given season although certain turtles may nest only once and others may nest as many as ten or eleven times.
Because of their size, each turtle uses a different method to move on land which allows researchers to determine species without actually seeing the turtle.
Female sea turtles instinctively return to the same beach as they were born to nest each year. Sometimes they even emerge from the ocean less than one hundred yards from the spot in which they were born.
Eggs are generally laid one month after mating and almost always during the cover of night on a deserted beach. Any light other than natural moonlight and starlight can be seen by the turtles and will cause the turtle to turn back to the sea to wait. Even the most subtle match strikes can be detected.
Sometimes a turtle will abandon a nest if she encounters an obstacle or if the sand does not have the right consistency or moisture content. Another turtle may nest regardless of what else is going on around her. If a turtle fails to nest and returns to sea it is referred to as a “false crawl”
Most females nest at least twice during a given season although certain turtles may nest only once and others may nest as many as ten or eleven times.
Because of their size, each turtle uses a different method to move on land which allows researchers to determine species without actually seeing the turtle.
Sea Turtle Facts
Wednesday, October 31, 2007
Bocas del Toro Panama is the nesting ground for a
number of sea turtles. Here are some basic facts
about sea turtles:
Sea turtles do not have teeth, instead they have a beak like jaw which they use to tear, crush and bite at the food in their diet.
Sea turtles do not have ears. They have an inner eardrum covered by a flap of skin and they hear best at low frequencies.
Sea turtles have an excellent sense of smell. Their vision is good underwater but they are nearsighted when on land.
Sea turtles can remain submerged underwater for an extended period of time if they are not exerting themselves. For example, routine activity requires oxygen replenishment every four to five minutes, but they can sleep underwater for several hours at a time without the need to replenish oxygen.
They have flippers shaped like paddles for easier navigation in the water. The front flippers are used to propel themselves and the back flippers are used for steering. Their shells are more streamlined for speed and efficiency in the water.
Due to their immense size, sea turtles cannot retract their heads into their shells. Their skulls and necks are not armored. Sea turtles cannot right themselves if they are turned upside down. They also cannot back up in water or on land.
Because the sea turtle is a reptile, it cannot regulate its own temperature. When they are too cold, they become lethargic and seek warmth. At warmer temperatures they risk overheating. A rapid rise in body temperature can cause a deadly heat stroke which is one reason they nest at night.
Sea turtles do not have teeth, instead they have a beak like jaw which they use to tear, crush and bite at the food in their diet.
Sea turtles do not have ears. They have an inner eardrum covered by a flap of skin and they hear best at low frequencies.
Sea turtles have an excellent sense of smell. Their vision is good underwater but they are nearsighted when on land.
Sea turtles can remain submerged underwater for an extended period of time if they are not exerting themselves. For example, routine activity requires oxygen replenishment every four to five minutes, but they can sleep underwater for several hours at a time without the need to replenish oxygen.
They have flippers shaped like paddles for easier navigation in the water. The front flippers are used to propel themselves and the back flippers are used for steering. Their shells are more streamlined for speed and efficiency in the water.
Due to their immense size, sea turtles cannot retract their heads into their shells. Their skulls and necks are not armored. Sea turtles cannot right themselves if they are turned upside down. They also cannot back up in water or on land.
Because the sea turtle is a reptile, it cannot regulate its own temperature. When they are too cold, they become lethargic and seek warmth. At warmer temperatures they risk overheating. A rapid rise in body temperature can cause a deadly heat stroke which is one reason they nest at night.