The first name Marlin is ♀ female and ♂ male.
Marlin is an ancient Roman name, which derived from the name Marcus, but it is as well a derivation of Merlin and Marline.
Marlin means “sea fortress”, “hawk” and “dedicated to (the Roman God) Mars”. For girls, it means “of Magdala”, “sea of bitterness”, “rebelliousness”, “wished for child” or “beloved”.