Anatomy
The animals are yellow colored, spotted grey and white, with darker pigmentation on the snout, mantle and base of the penis. Blue eyes are at the base of long tentacles. Valvatids all exhibit an external bipectinate ctenidium (respiratory organ) which is visible as the animal moves around.
Read more about this topic: Valvata Piscinalis
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“Man is a shrewd inventor, and is ever taking the hint of a new machine from his own structure, adapting some secret of his own anatomy in iron, wood, and leather, to some required function in the work of the world.”
—Ralph Waldo Emerson (1803–1882)