Chelonia mydas or Martinique green turtles make 10 different sounds

According to a study carried out by CNRS scientists on green sea turtles at Anses d’Arlet, emit 10 different sounds. The vocal abilities of these marine animals are highly developed. They perceive sounds and communicate with each other.

At Anses d’Arlet, swimmers often come across a Chelonia Mydas or green sea turtles. Technicians from the National Center for Scientific Research (CNRS) tested the ability of these animals to perceive and emit sounds.

They received help from the POEMM association which aims to train young Martinicans in sea trades and in particular in the profession of diving, which works throughout the year to preserve the marine ecosystem.

Recording devices were placed on 11 juvenile turtles.

CNRM scientists worked with members of the POEMM Association to study green sea turtles at Anses d’Arlet.


The results revealed that they emit 10 different sounds which vary between sound pulsations, noises of low amplitudes, modulated frequencies and even sometimes small cries.

These results erase old ideas that suggested that turtles were mute. We now know that they communicate with each other.

Today it is believed that their vocal abilities are highly developed. The researchers want to continue their work on the language of these animals during their reproductive phase.


The researchers want to continue studies on the language according to the activities of the turtles.


In Martinique, the habitat of green sea turtles extends along the entire west coast. They lay their eggs on all beaches.

The results of the last census carried out in Martinique were published by the MNHN (National Museum of Natural History).

The figures are alarming. There are only 150 green turtles in the waters of Martinique.

TurtleGreen territory

In Martinique, the territory of green turtles extends over the Caribbean coast of the island.


All over the world, the populations of the “Chelonia Mydas” are decreasing. Green sea turtles are placed on the International Union for Conservation of Nature (IUCN) Red List of Endangered Animals.

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