The Galapagos Islands Marine Lesson on endemic and keystone species, the Giant Tortoise, Marine Lizards, Galapagos Tropical Penguins, animal physical and behavioral adaptations, and the effects of invasive species and the human population on the native inhabitants. Google Classroom Ready This resource includes: The Galapagos Islands Map Background Information Endemic and Keystone species Keystone Species Study Text: The Giant Tortoise Marine LizardsGalapagos Tropical PenguinsAdaptations: Behavio