SHAME it's just male Seahorses that carry & birth the babies! Sea horses are truly unique, they are monogamous and mate for life. Rarer still, they are among the only animal species on Earth in which the male bears the unborn young.
The Princess and the Troll Sons, from The Boy and the Trolls, by John Bauer. ""Look at them," urged the troll mother. "Look at my sons. Handsomer trolls can't be found this side of the moon. But then of course, they take after their mother.