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The marine iguana (Amblyrhynchus cristatus), also known as the sea iguana, saltwater iguana, or Galápagos marine iguana, is a species of iguana found only on the Galápagos Islands . Unique among modern lizards , it is a marine reptile that has the ability to forage in the sea for algae , which makes up almost all of its diet. [ 3 ]
Salt gland of a bird and its inner structure Magellanic penguin. The avian salt gland has two main ducts: a medial and a lateral. Salt gland activations occurs from increased osmolarity in the blood, stimulating the hypothalamic information processing, sending a signal through the parasympathetic nerve activating vasodilation, the release of hormones (acetylcholine and vasoactive intestinal ...
The physiology of underwater diving is the physiological adaptations to diving of air-breathing vertebrates that have returned to the ocean from terrestrial lineages. They are a diverse group that include sea snakes, sea turtles, the marine iguana, saltwater crocodiles, penguins, pinnipeds, cetaceans, sea otters, manatees and dugongs.
Marine Iguanas are the only marine lizard species in the world found only in the Galápagos Islands. They can dive as deep as 30m (98 feet) and hold their breath for 30-40 minutes.
Marine iguana: marine iguanas live only on the Galápagos Islands and are not fully adapted to marine life. Although they feed exclusively on marine plants and spend a good deal of their time in the water, they do nest on land and need to bask in the sun to reach their ideal body temperature; they are thus also subject to terrestrial predators.
Following is a list of marine reptiles, reptiles which are adapted to life in marine or brackish environments. This list is incomplete ; you can help by adding missing items . ( August 2008 )
The marine iguana (Amblyrhynchus cristatus) is an iguana found only on the Galápagos Islands that has the ability, unique among modern lizards, to live and forage in the sea, making it a marine reptile. It can dive over 10 m (33 ft) deep and mainly lives on the rocky coasts, but can also be spotted in marshes and mangrove beaches.
Galapagos 3D is a British nature documentary series written and presented by David Attenborough, directed by Martin Williams and filmed in 3D.Attenborough returns to the Galápagos Islands for the fourth time in his career and travels throughout the archipelago to explain their origins and their unique fauna in evolutionary terms.