Marine Iguana

Galapagos Wildlife: Marine iguana with boats © Robin Slater

Marine iguana with boats © Robin Slater

Species Data

Common Name Marine iguana
Scientific Name Amblyrhynchus cristatus
Spanish Name Iguana marina
Conservation Status

Galapagos Graphics: IUCN Red List Vulnerable © Dan Wright

Vulnerable 

Endemic/Native/Introduced

Endemic 

Size Up to 1.5m
Average Lifespan 5-12 years
Predators On land, the Galapagos hawk and introduced cats, dogs and rats are predators and in the sea, several species of shark may prey on iguanas
Food Herbivore (green algae such as sea lettuce)
Animal Class Reptile

Species Overview

This unique animal is the only sea-going lizard in the world. Marine iguanas are able to dive to depths of 25 metres and can remain submerged for well over 10 minutes before having to return to land to warm up. They can often been seen basking in the sun on exposed lava to raise their body temperature to around 35.5°C.

Did you know that marine iguanas sneeze salt out of their nostrils? This strange adaptation has evolved to get rid of the excess salt which they ingest due to their marine diet.

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Species Data
Common Name Marine iguana
Scientific Name Amblyrhynchus cristatus
Spanish Name Iguana marina
Conservation Status

Galapagos Graphics: IUCN Red List Vulnerable © Dan Wright

Vulnerable 

Endemic / Native / Introduced

Endemic 

Size Up to 1.5m
Average Lifespan 5-12 years
Predators On land, the Galapagos hawk and introduced cats, dogs and rats are predators and in the sea, several species of shark may prey on iguanas
Food Herbivore (green algae such as sea lettuce)
Animal Class Reptile