Marine iguanas sneeze frequently to expel salt from glands near their noses. The salt often lands on their heads, giving them a distinctive white wig.
They are either black or dark grey in color except when males are near mating seasons when they turn shades of red and green. The dark pigment in the skin helps shield the animals from the effects of ultraviolet rays. It is also useful in warming the body.
With one breath, the iguanas can reach depths of 30 feet. Marine iguanas are cold blooded, however, and can only stay in the water for about 10 minutes.
Marine iguanas are cold blooded, however, and can only stay in the water for about 10 minutes.
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