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The marine iguana, also known as the sea
iguana or saltwater iguana
It 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. Large males are able to dive to find this food
source, while females and smaller males feed
during low tide. They mainly live in colonies on rocky shores where
they bask after visiting the relatively cold water, but
can also be seen in marshes, mangrove and
beaches. Large males defend territories for a short period,
but smaller males have other breeding strategies. After mating, the female digs a nest hole in the soil
where she lays her eggs, leaving them to hatch on
their own a few months later. Marine iguanas vary in appearance between the
different islands and several subspecies are
recognized. Although relatively large numbers remain and it is
locally abundant, this protected species is
considered threatened, primarily from introduced
predators and chance events like oil spills and
other human waste.