galapagos

Topics: Galápagos Islands, Charles Darwin, Natural selection Pages: 4 (1474 words) Published: November 27, 2013
The Galápagos Islands:
The Galápagos Islands are a small, but unique group of islands in the pacific, approximately 1000km west of South America; the islands were discovered in 1935 by the Spanish. Their volcanic origin should make the islands uninhabitable, but in fact, it’s actually teaming with life on the island. The current between the islands is hot and cold, giving it a good diversity, which means there is a variety in living organisms in that area. Life is everywhere on the islands because the animals have learnt to adapt to the conditions, this means that over time, an animal has change in order to fit in with its environment. A few examples of the animals on the islands are the Galápagos sea lion, the Galápagos land iguana, the marine iguana, the red, red rock crab, the white-tip reef shark, the brown pelican and flamingos. The islands are famous for their large number of endemic species, also because they were studied by Charles Darwin during the voyage of the Beagle. His observations and collections contributed to the inception of Darwin's theory of evolution by natural selection. The group of islands are split into the main islands and the minor islands. There are 18 main islands, these are: Baltra Island, Bartolomé Island, Darwin Island, Espanola Island, Fernandina Island, Floreana Island, Genovesa Island, Isabela Island, Marchena Island, North Seymour Island, Pinzón Island, Pinita Island, Rábida Island, San Cristóbal Island, Santa Cruz Island, Santa Fé Island, Santiago Island, and finally Wolf Island. The minor Islands are: Daphne Major, South Plaza Island, and finally the Nameless Island. The islands are pushed to the west because of the movement in tectonic plates, these move the islands an inch or two a year, so the oldest Galapagos Islands are in the west and the youngest are in the right. The extraordinary collection of islands formed from a mantle plume, which was a huge hot spot of magma that rose and erupted at the surface of the ocean....
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