The rostral organ of the coelacanth is a large gel-filled cavity in the snout, with three pairs of canals to the outside.
It is surrounded by an insulating layer of adipose tissue and innervated by the superficial ophthalmic nerve. Its anatomy and innervation suggest it is an electroreceptive organ used for finding prey in the dark. This is supported by experiments which showed that coelacanths react to electrical fields produced by a submersible.
This organ is not known in any other animal other than the anchovy.
Famous quotes containing the word organ:
“And this mighty master of the organ of language, who knew its every stop and pipe, who could awaken at will the thin silver tones of its slenderest reeds or the solemn cadence of its deepest thunder, who could make it sing like a flute or roar like a cataract, he was born into a country without literature.”
—Willa Cather (1873–1947)