Caribbean Sea Turtles are the oldest species and they always go back to their first beaches where they ventured or born. The temperature determines whether the born turtle will be a female or a male.
Sea turtles have existed for millions of years, and they spend their entire lives in the sea. Only females come ashore and venture onto beaches for few hours once or twice every two years to spawn on sandy beaches.
Here they lay their eggs in 40-50 centimetres deep holes and cover them with sand before returning to the sea.
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Although they are found in considerable numbers in most tropical and subtropical waters in the world, many species of the very highly endangered sea turtles became vulnerable to some threats from the changing nature.
Four of the species, specially the hawksbill turtle live in the Caribbean Sea, where they find food and mate between the corals and breed on the sandy beaches of Barbados in the east to Mexico in the west and from Florida in the north to southern Colombia.
The hawksbill turtle is one of the smaller sea turtles among these species here. It will be about 1 metre long and weighs up to 120 kilograms.
When the hawksbill turtle, like other sea turtles are under serious threat, not only because it has for centuries been a trophy and a delicacy that has been hunted by humans, other facts like the changing weather events threat them.
In recent years, global warming was a serious new threat to its survival.
Rising sea levels, rising seawater temperature, acidification of the seas and more extreme weather events can slowly destroy the coral reefs where the Caribbean Sea turtles live; forage and breed, and it can erode the beaches where the females lay their eggs.
Sea turtles cannot just find another beach or a new rev. Although they walk out migrating one hundred or thousands of miles and can take up to 30 years to reach maturity, they always come back to the same beach where they were hatched to mate and spawn.
Heating of the beach is also a threat. Turtles have no sex chromosomes. It is the ambient temperature of the sand surrounding the eggs, which determines whether the turtles come out of the buried eggs as males or females.
The higher sand temperature is the shorter the incubation period and the greater the likelihood that turtle kids come out as females.
An increase in sand temperature can cause a dramatic decrease in the number of male sea turtles. This will pose a severe threat to the survival of one of the oldest living animal species on the planet.
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