Sea monk

Illustration from Omnium fere gentium nostrae que aetatis nationum, habitus et effigies, et in eosdem epigrammata by Johannes Sluperius, 1572

The sea monk (also monk-fish or monkfish) was a sea creature found off the eastern coast of the Danish island of Zealand in 1546. It was described as a "fish" that outwardly resembled a human monk in his habit.