达尔文所登的这四座岛分别是位于东部的圣克里斯托瓦尔岛（San Cristobal）、南部的佛罗里那岛（Floreana）、西部的伊莎贝拉岛（Isabela）和北部的圣地亚哥岛（Santiago）。它们位于加拉帕戈斯群岛的外围，具备成为新航线补给站的潜力。
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Some had genes indicating their parents were living purebred Floreana tortoises, hinting that the species may not be extinct after all.
一些样本携带的基因显示它们的父辈是现存的纯种弗罗里安那象龟，表明这一物种或许根本没有灭绝。
Seven of the animals tagged and analyzed in 2008 were retrieved - one male and one female with Pinta DNA, and one male and four females with Floreana genes.
七只象龟在2008年经过标记和分析后被放归，其中一只雄性和一只雌性携带平塔岛象龟dna，另外一只雄性和四只雌性携带弗罗里安那岛象龟的基因。
Their plan was to capture and separate tortoises with high levels of Pinta and Floreana DNA, and then breed animals that are genetically closest to the original species.
他们计划捕捉几只象龟，根据其携带的平塔岛象龟和弗罗里安那象龟dna数量进行区分，并对遗传学上最接近原始物种的象龟进行人工哺育。
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