The marine iguana, also known as the sea iguana, saltwater iguana or Galápagos marine iguana, is a species of iguana found only on the Galápagos Islands of Ecuador. Unique among modern lizards, it is a marine reptile able to forage in the sea for algae, which make up almost all of its diet, and it is the only extant lizard that spends time in a marine environment; large males dive to find food while females and smaller males feed during low tide in the intertidal zone. Marine iguanas mainly live in colonies on rocky shores, basking after visiting the cold water or intertidal zone, though they can also be found in marshes, mangrove swamps and beaches, with large males defending territories for a short period while smaller males pursue other breeding strategies; after mating, the female digs a nest hole in the soil to lay her eggs, leaving them to hatch on their own months later.
Facts
Classification
System (Realm) ThreatsInvasive and Other Problematic Species, Genes and Diseases 2 Relationship to PeopleNo Significant Interaction with Humans 3 Living or ExtinctDerived from this species' own Conservation Status: this atlas's IUCN category list has no Extinct value, so a set conservation-status is itself evidence of living status. Identification
Distinguishing AppearanceWide-set eyes, a flattened snout, spiky dorsal scales and a salt-encrusted head; excess salt expelled from nasal glands leaves a white crust on the head. 1 Comparison
CITES Appendix Scientific NameAmblyrhynchus cristatus 1 Conservation Status Connections
Child Taxon Of
Source Wikidata: Marine Iguana
In Biome
Source Wikipedia: Marine iguana
In Ecosystem
Source World Wildlife Fund
In the Other Atlases
Found In
Also in Geography Atlas: where this subject is found.
Sources
1. National Geographic: Marine Iguana
Fact box
Amblyrhynchus cristatus
Conservation status box
Vulnerable
Appearance section
They're not pretty, with their wide-set eyes, smashed-in faces, spiky dorsal scales, and knotty, salt-encrusted heads.
View the Source2. Wikipedia: Marine iguana
System/realm (MediaWiki batch-API article extract states it plainly)
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 (Ecuador).
Threat (MediaWiki batch-API article extract states it plainly)
Although relatively large numbers remain and it is locally abundant, this protected species is considered threatened, primarily from El Niño cycles, introduced predators and chance events like oil spills.
Lead section
Unique among modern lizards, it is a marine reptile that has the ability to forage in the sea for algae, which make up almost all of its diet.
Article text
The marine iguana is completely protected under the laws of Ecuador, and is listed under CITES Appendix II.
- In Biome: Intertidal Zone, Wikipedia intro: "able to dive to find this food source, while females and smaller males feed during low tide in the intertidal zone. They mainly live in colonies on rocky shores..."
View the Source3. Animal Diversity Web, University of Michigan Museum of Zoology: Amblyrhynchus cristatus account
Animal Diversity Web, University of Michigan Museum of ZoologyEconomic Importance for HumansQuote, Economic Importance for Humans
The marine iguana does not affect humans because humans do not inhabit most of the islands they live on.
View the Source Wikidata: Marine Iguana
- Wikidata Q208796, class allow-list match (w-wdresolver-0926)
- Child Taxon Of: Iguanidae, Wikidata parent-taxon (P171) chain
View the SourceWorld Wildlife Fund
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