Sea lion

Sea lion

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This image is part of the feature ANIMALS IN HEAT


Caption: Sea lion. Thermogram of a sea lion with its mouth open. A thermogram shows variation in temperature on the surface of an object, measured by the long- wave infrared radiation it emits. The temperature scale is colour-coded and runs from purple (-8.1 degrees Celsius, coldest) through blue, green and yellow to light red (warmest, 32 degrees Celsius). The fur of a sea lion traps air to aid insulation. In addition to this it has an insulating layer of blubber, where this is absent, heat loss is greatest.

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Keywords: animal, barking, biological, biology, calling, coloured, false-coloured, fauna, heat, infrared, infrared camera, insulated, insulation, ir, long-wave infrared radiation, mammal, marine, nature, sea lion, thermal imaging, thermogram, thermography, wildlife, zoological, zoology

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