I have had a human child with them, but it's always a human. Someone said something about a sea witch in a cave near Fishtopia to be reborn a a deepone.
human child is the deepone you would not know unless you know how long deepone birth is supposed to take or unless you did the abortion check at elises since the rebirth menu will show smelly human as far as like how long its supposed to take its 10-15% longer than a human birth