File:Juvenile Marine Iguanas (Amblyrhynchus cristatus) on Isabela, Galapagos Islands.jpg

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Summary

Description This was a nesting ground on an isolated islet off the coast of Isabela. In the background is a small channel full of white tip sharks. I figured they were waiting for baby iguanas to clamber in and get a nice meal, but our guides said the sharks were merely resting in the calm waters and rarely feed on iguanas. Darwin hypothesized that the reason you can't scare a marine iguana into the water is because that's were its only predators are (thet are actually predated by hawks on land too though). A more likely reason would probably be that diving into the water forces one to loose copious amounts of body heat. Only large marine iguanas will dive into the water to feed, as they can retain body heat more easily, and smaller iguanas will feed more in the intertidal zones during low tide. This also helps explain their dark pigmentations, which would help gain heat rapidly during basking after a cold swim.
Date
Source Juvenile Marine Iguanas (Amblyrhynchus cristatus) on Isabela, Galapagos Islands
Author Dallas Krentzel
Camera location0° 58′ 14.51″ S, 90° 57′ 38.01″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by Dallas Krentzel at https://flickr.com/photos/31867959@N04/6011807321. It was reviewed on 21 July 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

21 July 2015

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4 June 2011

0°58'14.513"S, 90°57'38.012"W

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current01:47, 21 July 2015Thumbnail for version as of 01:47, 21 July 20152,896 × 1,936 (2.12 MB)Eyrewood Studios{{Information |Description=This was a nesting ground on an isolated islet off the coast of Isabela. In the background is a small channel full of white tip sharks. I figured they were waiting for baby iguanas to clamber in and get a nice meal, but our g...
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