Photograph by Andy Turko, University of Guelph
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Humans trying to cool down might jump into water. But a new study shows that when an amphibious fish called the mangrove rivulus (Kryptolebias marmoratus) feels warm, it does the opposite—it jumps out.  

Photograph by Andy Turko, University of Guelph

To Cool Off, This Fish Leaves the Water

Researchers say the species reacts to warm water and lowers its body temperature quickly while on land.