Like many beasts of the sea, they only grew as large as their environment allowed.
This one would be a gift to that sailor he’d once take up with, that was, if the man ever returned to port.
Lawl XD And what would happen if the sailor ever gets his gift and then releases it into the sea? Would the creature come back and be a friend? Or attack the ship because it resented being kept tiny?
Honestly, it doesn’t matter much, because the sailor is probably one of those guy-in-every-port types.
What would your two line story be? :)