KNOW YOUR TORTOISES – where else in the world can you find giant tortoises?

The Galapagos Islands of Ecuador hold the largest collection of species of giant tortoises, but these remarkable chelonians are found in just one more place on Earth…

Giant Tortoise Of The Galapagos Islands
Galapagos Giant Tortoise Is An Icon Of The Islands

Herpetologists are scientists who specialize in reptiles, and nothing has puzzled them more than the evolution of giant tortoises. Fossil records show that giant tortoises back in time existed in many places on Earth, except Australia and Antarctica. They vanished from the surface of the Earth, but evolved as giants again in two places of our planet. Thus, the term relic species is widely used when referring to these giant chelonians.

Found in the Galapagos Islands and also somewhere in the Indian Ocean?

The Galapagos Islands are located about 1,000 Km off the coast of western South America in the Pacific Ocean, while another far out archipelago off the coast of eastern Africa (parallel to Tanzania and Kenya) and northeast of Madagascar is home to many islands and atolls. This is the Seychelles Archipelago. It was colonized much earlier than the Galapagos, and over the years it received direct human impact with the introduction of many species and the extinction of many native and endemic species. Many islands in the Seychelles had giant tortoises in the past, and now only one atoll still holds a natural population of tortoises: Aldabra Island. 

Source: Incredible World

Exploring the Galapagos Islands provides you with several options to see giant tortoises in the wild and also under semi-natural conditions. You can see them from their breeding and hatching season to their fully grown stage. The big difference is that, opposite from the Seychelles, in Galapagos you can still see giant tortoises in various islands of the archipelago, and also see the efforts for the protection of these equatorial chelonians.

Galapagos Giant Tortoise Eating

Are there any morphological differences in these tortoises?

If you just see the two types of tortoises in front of you most people will hardly tell obvious differences, but if you exert your power of observation, just like Charles Darwin did while on the voyage of the Beagle, then you will start noticing some interesting features. Perhaps the easiest difference to observe is in their shell (called, the carapace). Those large puzzle-like pieces are called scutes and they are dermal plates made of keratin just like our nails. These plates cover the bony structure of the shell which is made of fused ribs, vertebrae, and sternum. In other words, they carry a perfect armor with them.

Source: Yacht Isabela II

Aldabra Tortoises vs. Galapagos Giant Tortoises

Take a look at the frontal edge of the carapace and right behind the emerging neck of the tortoise, you will see that one shell has an extra piece (called, the nuchal plate). Aldabra tortoises show this extra plate, while Galapagos tortoises lack it. The pictures illustrate this better. The head of the Aldabra tortoise seems a bit more round too, while that of the Galapagos tortoise shows a more square shape. Those are just some of the most visible differences.

Galapagos Giant Tortoise Species: Aldabra

Many zoos in the world carry displays with giant tortoises, and although commonly Galapagos tortoises are eagerly showcased, there are more Aldabra tortoises found in captive environments. While these displays could spark the interest in exploring a particular destination, nothing is better than seeing a giant tortoise in its true natural habitat.

World explorers can explore the Galapagos Islands onboard Yacht Isabela II with capacity for just 40 guests. There are three itineraries that explore the different corners of the archipelago, and all options give you the chance of seeing Galapagos giant tortoises as well as many other of the iconic BIG15 species of the archipelago.

Don’t miss the amazing moments of the Galapagos iconic species!

Francisco Dousdebés – Galapagos Expert, Quito, April 30th, 2016 – 0°39’S / 91°22’W

Updated:May 9, 2023

Published:May 2, 2018


Machu Picchu & Galapagos Islands Tour 2024 Package: 12 days / Quito, Galapagos Islands and Machu Picchu / From USD 9,598 per person



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Terms and Conditions

Itinerario de 5 días / 4 noches: Basado en la tarifa regular (4214 USD + impuestos por persona)
Itinerario de 7 días / 6 noches: Basado en la tarifa regular (5672 USD + impuestos por persona)
No reembolsable. Aplica únicamente para residentes ecuatorianos en nuevas reservas directas realizadas, hasta el 30 de junio del 2022, con un ejecutivo de ventas del hotel. Válido para estadías hasta el 31 de agosto de 2022. No puede ser combinada con otros descuentos, promociones u ofertas. El descuento no aplica para otros servicios. El precio no incluye recargo de combustible de $20 por noche de crucero.

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