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4. Pacific Ocean. Galapagos Marine Iguana eating marine algae growing on rocky shores. 2006 - 2020 (c) PIXTA Inc. All Rights Reserved. Ecuador. Human-induced climate change is a concern for this species, as it's anticipated that it may increase the frequency of the warmer El NiÃ±o events, which could decimate subpopulations of marine iguanas.Â, Juvenile marine iguanas on Isabela Island, the largest island of the GalÃ¡pagos Â© Dallas Krentzel via Flickr (CC BY 2.0). Happyingalapagos.com is owned by Metropolitan Touring. It's thought that the closest relative of GalÃ¡pagos iguanas are the spiny-tailed iguanas (Ctenosaura)Â found in central America. 1. Having seen the species during his travels aboard HMS Beagle, Charles Darwin noted in a letter that they 'swim quickly and with much elegance' with their legs fixed to their sides and using a 'serpentine movement, like an eel' to propel themselves.Â, Marine iguanas take in a lot of salt when they feed in the ocean, but they are able to expel it through their nostrils Â© Andrew Skujins via Wikimedia Commons (CC BY-SA 3.0). This is likely due to the smaller individuals being able to forage for their reduced food resources more efficiently, using less energy. The amount of brown algae increases, but the lizards can't easily digest this and it may even be toxic to them. When the water begins to cool and food becomes abundant again, the iguanas' body length increases once more. Their blunt noses and sharp teeth allow them to easily graze on the algae growing on rocks. Galapagos Marine Iguana eating marine algae growing on rocky shores, Galapagos Marine Iguana eating marine algae growing on rocky shores and underwater. The International Union for the Conservation of Nature (IUCN) lists marine iguanas as Vulnerable, with one reason being the threats they face from their population fluctuations.
This reduction in food causes the animals to die by starvation, with the larger iguanas more at risk. To search by image, please select one of following ways. © The Trustees of The Natural History Museum, London. Marine iguanas mostly eat marine algae.
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