Sømunk - the sea munk

The illustration on the left is by
professor Guillaume Rondelet, and on the right
by naturalist Pierre Belon, both from the 16th century.
At center is an illustration of a squid caught in 1854

The sea monk, or sometimes monk-fish, was the name
given to a sea animal found off the eastern coast of the Danish
island of Zealand almost certainly in 1546. It was described
as a 'fish' that looked superficially like a monk.