Glass Frogs Transparency

This photo provided by researchers in December 2022 shows a male glass frog photographed from below using a flash, showing its transparency. Scientists measured muscle and ventral skin, finding that these tissues transmit over 90% of visible light and are yet perfectly functional. Some frogs found in South and Central America have the rare ability to turn on and off their nearly transparent appearance, researchers report Thursday, Dec. 22, 2022, in the journal Science. (Jesse Delia/AMNH via AP) AP PROVIDES ACCESS TO THIS THIRD PARTY PHOTO SOLELY TO ILLUSTRATE AP STORY "GLASS FROGS TRANSPARENCY" TRANSMITTED ON DEC. 22, 2022; MUST BE USED WITHIN 14 DAYS FROM TRANSMISSION; NO ARCHIVING; NO LICENSING; MANDATORY CREDIT

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