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Lazy Sunfish isn’t Quite so Lazy After All

posted: 05/01/15
by: Discovery.com Staff
Sunfish (mola mola)
johnnorth/Thinkstock

At first glance, the sunfish (Mola mola) appears to spends its life sunbathing leisurely near the surface of the ocean and floating along to ocean currents. A new study published in the Journal of Animal Ecology, however, paints the sunfish in a much different light.

A team of University of Tokyo researchers attached a camera and an accelerometer to sunfish to observe their movement.

As it turns out, the sunfish dove to depths of more than 600 feet below the surface, where footage revealed that the fish feeds on siphonophores, small jellyfish-like creatures. At such deep depths, the sunfish's body temperature decreased; thus, the animal retreats to the surface of the ocean for heat.

Learn more about fish:

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The World's Largest Fish
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