San Diego Zooのインスタグラム(sandiegozoo) - 6月30日 08時19分

The rattle of the #rattlesnake is made up of a protein called keratin, the same protein that your hair and fingernails are made of. A new segment is added each time a rattlesnake sheds, but they can shed at different rates. A rattlesnake can move its rattle back and forth 60+ times per second. #reptilesrule #staringcontest #sandiegozoo (?: Paul Manaig)

[BIHAKUEN]UVシールド(UVShield)

>> 飲む日焼け止め！「UVシールド」を購入する