TAMAR responds


About sea turtles

Is it a reptile?


Sea turtles are reptiles that originated from their terrestrial ancestors. While they can spend long periods of time underwater, they breathe through their lungs and have to emerge from their aquatic environment. They also emerge to nest, depositing their eggs on land.

How many species exist in the world?

There are seven species of sea turtles in the world that are grouped into two families: Dermochelyidae and Cheloniidae. Of these seven species, five are found in all ocean basins, including the coast of Brazil.

Loggerhead (Caretta caretta)
Green (Chelonia mydas)
Hawksbill (Eretmochelys imbricata)
Olive ridley (Lepidochelys olivacea)
Leatherback (Dermochelys coriacea)

Where are the nesting areas in Brazil?

Potentially, the whole Brazilian coast may receive female turtles to lay their eggs But usually the animals seek areas with warmer sand and water.

Therefore, the main nesting areas are in Rio de Janeiro State, north of the Espirito Santo State and extend across the Northeast regions of the Brazilian coast where temperatures are higher.

How long a sea turtle live?

Neither the researchers from Brazil, or the other countries have the correct answer. It is known the sea turtle is an animal with a long life cycle . Depending on the species, only became adults about 30 years. That is why scholars in the world estimate that sea ​​turtle can reach 100 years. But no one is completely sure.

How long they can be underwater?

Between 10 and 30 minutes on average. The more active , less time dipping . When rise to breathe on the surface are less than two to three seconds.

It is the time necessary to eliminate the accumulated CO2 during the dive and inspire enough oxygen
for the next.

But if it wants, the turtle may remain on the surface longer, for example, floating to warm up, feed , orient or copulate .

It sleeps?

Yes , the sea turtle sleeps or rests. Typically at night, but can also be during the day. Sleeping on the seabed , protected by the rocks when the bottom is rocky or reef .

Also sleeping floating on the surface. But this varies .

When in oceaicn areas , for example, prefers to rest on the surface or in the water column .

What's its diet?

Each species has its preferred diet .

Green (Chelonia mydas) feeds on algae and sea grasses and olive (Lepidochelys olivacea) likes crustaceans, fish and shellfish .

The leatherback (Dermochelys coriacea) only eat jellyfish and other gelatinous organisms and the loggerhead (Caretta caretta) prefers crabs, clams, mussels and other invertebrates, crushed by the strength of its jaw.

The hawksbill (Eretmochelys imbricata) likes more sponges, but also eats a lesser amount of anemones, algae and crustaceans.

Are the sea turtles threatened with extinction?

The five sea turtle species found in Brazil are threatened with extinction according to the Brazilian and IUCN list of endangered species.

Of the five species that occur on the Brazilian coast, the four listed as most threatened nest on the continental coast where they are more exposed to anthropogenic threats.

Why to protect?

We need to protect sea turtles. They represent the continuation of life over 100 million years. Despite threats, they fight to survive and to contribute to the lives of other species - including man.
Throughout their lives, sea turtles contribute energy and nutrients that are vital to the survival of many forms of life. Sea turtles depend on the existence of a multitude of fish, crustaceans, mollusks, sponges, and jellyfish. The also depend on the existence of mangroves, sand banks, seagrass, algae, coral reefs, islets, and geological formations.

To protect sea turtles is to preserve marine life, ensuring the survival of our planet and of humanity.

Credits: Story


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