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The endangered Hawksbill turtle 

hawksbill turtle
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The endangered Hawksbill turtle 

My first sea turtle observed

I decided to talk about the Hawksbill turtle I discovered while my last diving in Ko Tao in Thailand, in September 2018.

I have the Open and Advanced levels that I passed in 2013 and 2016 and in my last travel in Thailand, I was in Koh Tao where I did some fun dives. So it was during one of these dives that I saw my first sea turtle. With my diving instructor were lucky because while the first dive, we did not see any sea turtle.

Why this article? 

As diver I wanted to share with you a little bit of information about this specie of turtle that is critically endangered according to the Red list of IUCN. Indeed, this is important to be aware of this problematic because if this specie of turtle is endangered is because of many different reasons that are explained below.

Let’s discover more about this turtle and why she is so endangered and what we must do to avoid its extinction.

The Hawksbill sea turtle

Scientific classification

Scientific name: Ertmochelys imbricata

Kingdom: Animalia

Phylum: Chordata

Class: Reptilia

Family: Cheloniidae

The Hawksbill turtle gets this name from its curved shape, and pointed and curved beak. It also has a tapered head ends, their shells change colours depending on water temperature. Their carapace is unusual among marine turtles as the scutes are overlapping. Another characteristic of the hawksbill turtle is the high colours with elaborated patterns of thick scutes on their carapace, and also their shell is very thin, flexible.

The Hawksbill turtle is one of the smallest sea turtles among other species with less than 1 metre long. On its head there are two pairs of prefrontal scales and four pairs of costal scutes on the carapace, and his forelimbs have two claws on each flipper.

Habitat

This specie of turtle spends part of its live in the open ocean, but it is a reef-associated turtle. Indeed, they are especially found in coral reefs, and also in rocky areas, lagoons, and mangroves. These turtles are mainly found in tropical and subtropical regions of the Atlantic, Pacific, and Indian Oceans. They migrate from long distances.

Feeding

They are omnivorous and eat sea urchins, sea sponges that are their principal food with 70-95% of their diet, but they also feed on algae, cnidarians, and molluscs… Sponges normally constitute a major proportion of their diet. Thanks to their beak, they extract invertebrate preys that are hidden in coral reef.

Predators

Their hard shell protects them from predators, but they are still prey to large fishes, sharks, crocodiles, octopuses, and humans.

Reproduction

The female hawksbill turtles are mature between 20 and 25 years of age and they nest every 2 to 3 years and lay 60 to 200 eggs at time. After 62 days of incubation in the sand, eggs hatch. They live until 30-50 years. Female turtles return to the same beach where they hatched to nest.

Threats

Wildlife trade threatens the Hawksbill turtle through their beautiful coloured carapace, which is coveted for jewellery, and ornaments. Indeed, this population has declined more than 80% in the last century due to this trade. Concerning to turtle meat and eggs, in certain small island nations, there is still a high demand with legal and illegal harvesting of adults and their nests.

Apart from jewellery trade and turtle meat, there are others trades that affect sea turtles such as marine debris, climate change, and destruction of their habitat.

Indeed, marine debris cause also damage to this specie of turtle with plastic bags in the ocean that look like jellyfish, which is part of their diet. Furthermore, turtles that have their gut obstructed ingest plastic bags die of starvation.

Climate change and rising area sea levels are indirect threats to the survival of this specie. Artificial lights are also another threat that disorientates turtles babies who hatch on beaches.

Finally, the IUCN Red List considers this specie critically endangered around the world.

How can people help?

Not buying turtle shell jewellery or decoration is a first step to reduce the demand. This is also important not using plastic bags and throw away them into the ocean because in this way plastic bags won’t be eaten by sea turtles. Reducing plastic bags is within the reach of everyone.

A la recherche de la version française?

>>>> La tortue imbriquée, une espèce en voie critique d’extinction <<<<< 

Travel infos 

I travelled in: September 2018

Where: in Ko Tao

Country: Thailand

**********

Géraldine

© 2018 – Wairua Kaieke

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swiss travel blogger

Travel blogger and photographer from Switzerland.

I travel the world and with my photographs I show the beauty of the world in order to raise awareness to people about Planet Earth’s issues, and wildlife.

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