Tortoises are reptiles of the family Testudinidae of the order Testudines. Like other turtles, tortoises have a shell to protect from predation and other threats. The shell in tortoises is generally hard, and like other members of the suborder Cryptodira, they retract their necks and heads directly backward into the shell to protect them.
The Galápagos Islands are an archipelago of volcanic islands in the Eastern Pacific, located around the Equator 900 km (560 mi) west of South America. They form the Galápagos Province of the Republic of Ecuador, with a population of slightly over 33,000 (2020). The province is divided into the cantons of San Cristóbal, Santa Cruz, and Isabela, the three most populated islands in the chain. The Galápagos are famous for their large number of endemic species, which were studied by Charles Darwin in the 1830s and inspired his theory of evolution by means of natural selection. All of these islands are protected as part of Ecuador's Galápagos National Park and Marine Reserve.
Giant tortoises are any of several species of various large land tortoises, which include a number of extinct species, as well as two extant species with multiple subspecies formerly common on the islands of the western Indian Ocean and on the Galápagos Islands.
The Pinta Island tortoise, also known as the Pinta giant tortoise, Abingdon Island tortoise, or Abingdon Island giant tortoise, is a recently extinct subspecies of Galápagos tortoise native to Ecuador's Pinta Island.
Pinzón or Pinzon Island is an island in Ecuador's Galápagos Archipelago. It has no permanent population, an area of 18 square kilometers (6.9 sq mi), and a maximum elevation of 458 meters (1,503 ft). Home to giant Galápagos tortoises of the subspecies Chelonoidis duncanensis and Galápagos sea lions, the island has no visitor facilities and a permit is required for legal visits.
Fernandina Island is the youngest and third largest island in the Galapagos, as well as the furthest west. It has an area of 642 km2 (248 sq mi) and a height of 1,476 m (4,843 ft), with a summit caldera about 6.5 km (4.0 mi) wide. It is younger than Isabela, being only less than one million years old since its formation. Like the other islands, it was formed by the Galápagos hotspot. The island is an active shield volcano that has most recently erupted in March 2024.
The Galápagos Islands are located off the west coast of South America straddling the equator. The Galápagos are located at the confluence of several currents including the cold Humboldt Current traveling north from South America and the Panama Current traveling south from Central America make the islands cooler and provide the perfect environment for the unique mix of wildlife that inhabits the islands.
The Galápagos tortoise or Galápagos giant tortoise is a very large species of tortoise in the genus Chelonoidis. The species comprises 15 subspecies. It is the largest living species of tortoise, and can weigh up to 417 kg (919 lb). They are also the largest extant terrestrial cold-blooded animals (ectotherms).
The Zanzibar leopard is an African leopard population on Unguja Island in the Zanzibar archipelago, Tanzania, that is considered extirpated due to persecution by local hunters and loss of habitat. It was the island's largest terrestrial carnivore and apex predator. Increasing conflict between people and leopards in the 20th century led to the demonization of the Zanzibar leopard and determined attempts to exterminate it. Efforts to develop a leopard conservation program in the mid-1990s were shelved when wildlife researchers concluded that there was little prospect for the population's long-term survival. In 2018, a leopard was recorded by a camera trap, thus renewing hopes for the population's survival, although some experts remain skeptical.
The spectacled caiman, also known as the white caiman, common caiman, and speckled caiman, is a crocodilian in the family Alligatoridae. It is brownish-, greenish-, or yellowish-gray colored and has a spectacle-like ridge between its eyes, which is where its common name come from. It grows to a length of 1.4–2.5 m and a weight of 7–40 kg (15–88 lb), with males being both longer and heavier than females. Its diet varies seasonally, commonly consisting of crabs, fish, small mammals, amphibians and snails. Breeding occurs from May to August and 14–40 eggs are laid in July and August. This crocodilian has a large range and population; it is native to much of Latin America, and has been introduced to the United States, Cuba, and Puerto Rico.
Lonesome George was a male Pinta Island tortoise and the last known individual of the subspecies. In his last years, he was known as the rarest creature in the world. George serves as an important symbol for conservation efforts in the Galápagos Islands and throughout the world.
Chelonoidis is a genus of turtles in the tortoise family erected by Leopold Fitzinger in 1835. They are found in South America and the Galápagos Islands, and formerly had a wide distribution in the West Indies.
Joseph Richard Slevin was an American herpetologist and the second curator of herpetology at the California Academy of Sciences, with which he was affiliated for over 50 years. He collected reptile and amphibian specimens from around the world, notably in the Galápagos Islands in a 17-month expedition, and was largely responsible for re-growing the academy's herpetological collection following its destruction in the 1906 San Francisco earthquake. He wrote or co-wrote nearly 60 scientific papers, and is commemorated in the scientific names of over a dozen species or subspecies of animals and plants.
Chelonoidis niger donfaustoi, known as the eastern Santa Cruz tortoise, is a subspecies of Galápagos tortoise living on Santa Cruz Island, within the Galápagos. Until 2015, C. n. donfaustoi was considered conspecific with the western Santa Cruz tortoise, C. n. porteri.
Extinct or Alive is an American wildlife documentary television programme produced for Animal Planet by Hot Snakes Media of New York City, the United States. It is hosted by wildlife biologist and television personality Forrest Galante, who travels to different locations around the globe to learn about possibly extinct animals and whether or not there is a chance that they may still be extant. The series has been involved in the possible rediscovery of eleven animals, namely the Zanzibar leopard, the Pondicherry shark, the Fernandina Island Galápagos tortoise, the Miller's grizzled langur, the Cape lion, the Malagasy hippopotamus, the Yangtze giant softshell turtle, Rio Apaporis caiman, Whitetip weasel shark, Ornate sleeper-ray and the Flapnose houndshark.
Chelonoidis niger phantasticus is a subspecies of Galápagos tortoise that was discovered in 1906 and thought extinct, until a single female was discovered living on Fernandina Island by an expedition in February 2019. In May 2021, a genetic test carried out by scientists from the California Academy of Sciences confirmed that the single female tortoise discovered in 2019 is from the subspecies Chelonoidis niger phantasticus. The subspecies name has often been misspelled as phantastica, an error introduced in the 1980s when Chelonoidis was elevated to genus and mistakenly treated as feminine, an error recognized and fixed in 2017.
Chelonoidis niger chathamensis, commonly known as the Chatham Island giant tortoise or the San Cristóbal giant tortoise, is a subspecies of Galápagos tortoise endemic to San Cristóbal Island in the Galápagos.
Colossal Biosciences is a biotechnology and genetic engineering company working to de-extinct the woolly mammoth, the Tasmanian tiger, and the dodo. In 2023, it stated that it wants to have woolly mammoth hybrid calves by 2028, and wants to reintroduce them to the Arctic tundra habitat. Likewise, it launched the Tasmanian Thylacine Advisory Committee, a thylacine research project to release Tasmanian tiger joeys back to their original Tasmanian and broader Australian habitat after a period of observation in captivity.
