Cocoon of Antheraea yamamai, at Ise, Mie, Japan.
<a href="//commons.wikimedia.org/wiki/User:N_yotarou" title="User:N yotarou">N yotarou</a>
CC BY 2.5
taken by <a href="//commons.wikimedia.org/wiki/User:N_yotarou" title="User:N yotarou">N yotarou</a>