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On Santa Cruz Island, a comprehensive and extremely successful Galapagos Giant Tortoise Restoration project has been ongoing for several decades. This past year has witnessed major advancements in the project because of modern technologies and the efforts of the Galapagos National Park Rangers.
Hundreds of thousands of giant tortoises lived among 14 species on the Galapagos Islands before humans arrived. Only 11 kinds of giant tortoises remain on the islands now, and even that number results from the tortoises’ extraordinary longevity and the park’s diligent work. Giant tortoises have, however, suffered horrifying destruction over the years. Even with significant attempts to boost populations, there are still much fewer tortoises than there ever were—entire islands are devoid of giant tortoises. Every milestone in development is, therefore, extremely significant and worthy of celebration.
Who are these slow-moving giants?
The largest tortoise in the world is the Galapagos giant tortoise, which averages 1.2 meters in length and 250 kg in weight. Occasionally, a tortoise may weigh as much as 400 kg. They are said to be incredibly slow-moving animals that lie dormant for so long that lichen grows on many of their shells. However, in poor times, their size is an asset since they can store enough water and nutrients to last almost a year without eating or drinking, partly because they have a water storage area right behind their necks and can consume up to 36 kg daily.
However, their contribution to the creation of contemporary evolutionary theory may be even more significant. During his island visit, Charles Darwin was greatly influenced by these enormous tortoises. He saw that, like the finches, the tortoises differed from island to island and appeared extraordinarily well-suited to their unique environment, which also changed from island to island. It was as though they had evolved to exploit their ecological niche better!
Ongoing Galapagos Giant Tortoise Restoration and Conservation Efforts
Due to several factors, including the complete eradication of feral goats, the improvement of nesting areas, the significant decrease in introduced rats, and the restoration of their natural habitats, Galapagos giant tortoises today have a far higher chance of survival than they did fifty years ago. Their hatching success rate in the wild is no higher than 10%, and even in the absence of predators, their reproduction is still vulnerable due to the ongoing presence of introduced animals.
Therefore, the park’s main focus this year is the Galapagos Giant Tortoise Restoration Initiative and the development of techniques to safeguard tortoise nests in significant breeding sites. As of October of this year, 313 turtle nests had been protected thanks to the efforts of park rangers in the Galapagos National Park. By building a mesh fence around the nest, these rangers hope to protect it from predators like wild pigs. They aim to use a global positioning system (GPS) to identify as many nests as possible rigorously.
Apart from the Galapagos Giant Tortoise Restoration Initiative, further efforts were made to facilitate the tortoises’ productive procreation. Control measures were put in place to combat invasive species like ants, which have the potential to seriously damage eggs. Additionally, in order to support the baby tortoises that the park will release in December, rangers have been mowing access trails. Earlier this year, some eggs were taken out of nests and given to the captive breeding program on Santa Cruz, where the hatching success rate is approximately 75%. The hatching season for several species of tortoises is rapidly approaching, which makes our effort incredibly crucial.
Best places to observe Galapagos giant tortoises
Isabela, Pinzon, Española, San Cristobal, Santa Cruz, and Santiago islands are home to giant tortoises. The tortoise-breeding center on Isabela and the Santa Cruz mountains, where tortoises flourish in their native habitat, are two of the best places to see gigantic tortoises.
How many famous BIG15 species will you spot while visiting the Galapagos? See some of the most unique and unusual species when you explore our Galapagos cruise Santa Cruz II itineraries!
