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Marine Iguana

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Marine iguana is found only on Galapagos Island. It can feed in the sea and this is the supreme skill among the modern lizards. Due to this behavior, it is called marine reptile. It is also known as Galapagos marine iguana.
• A marine iguana has long claws which are used for climbing onto the rocks. It has tough skin with dorsal spines. Short nose of iguana helps to eat algae. Flattened tail is also present which helps in propelling it against water. Marine iguana has salt glands that are associated to nasal cavity ad hence remove excess salts from body. (1)
• Marine iguana differs in body size. They are medium in size. Males are larger than females and are 4 feet or more in size. Females select larger males for mating. (2)
• Reproduction …show more content…

As they are cold-blooded so their body temperature is controlled by extrinsic sources such as sunlight etc.The iguanas eat only in the cold sea. They eat algae growing on the rocks. The cold water in ocean can slow them down and could even kill them. The best algae grow close to the low tide mark. Strong claws and good grip is essential for most of the iguanas, life is ruled by tides but the big males have another option. Below the low tide mark, the growth of algae is luxuriant because the rocks are always covered. Body temperature of iguanas decreases in cold ocean water. The iguanas use the heat of topical sun to warm themselves. Their bodies are larger and they can store heat and do not chill so quickly. Once they warm to optimum 35 degree, they take to the water down there; they can take advantage of food supply. They can hold their breath for 20 minutes so they have to feed fast. Every minute they spend, heat is draining from their body. If temperature falls to low, they are not able to move and will die (5). Marine iguanas are not always black in color .Young iguanas are light in color and some adults are grey in color (6).The iguanas can’t control their body temperature so they bask in the sun. Dark color of iguana help in absorption of heat (7).Iguanas can allow its body temperature to rise at about two times the rate at which its body temperature decreases by adjusting its heart rate and blood flow to its surface

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