Green sea turtles
Connectivity between Cocos Island and the Galapagos Islands
The ecological connection that exists between Cocos Island and the Galapagos archipelago is well-known and has been documented on several occasions. Among these the case of Sanjay, the green sea turtle stands out. In 2014 this turtle was tagged off Cocos Island and 14 days later it was recorded in the waters of the Galapagos Marine Reserve.
In a similar fashion, this connection has been demonstrated by biologists from Costa Rica by means of analysis of genetic material extracted from turtles present in both island areas. They concluded that there was over 90% genetic coincidence among them.
Furthermore, in view of the low numbers of green sea turtles that nest on Cocos Island, the results suggest that most green sea turtles present in the waters around this island come from the Galapagos archipelago.
Connectivity between Cocos Island and Malpelo Island
In addition to this, green sea turtles tagged with ultrasonic transmitters at Cocos Island have been detected by acoustic receivers set up around Malpelo Island, Colombia. With this information, once again the existence is confirmed of movement of green sea turtles between the three groups of islands.