Phenacovolva sp.
Unexpectedly sensitive
This is Spindle Cowrie, Phenacovolva sp. The narrow, tubular shells covered with the beautiful mantle. It is often seen on a blanch of Dendronephthya like a sea fan. So that the color of the mantle is the same as its host color, it is difficult to find out it. It seems that the blue color mass is its eggs.When the spindle cowrie is surprised, it pulls its mantle in the shell immediately. And a slippery shining appears smooth. It is unexpectedly sensitive. Hitotsu-ishi point, Owase, Mie, Japan
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