A somewhat disturbing question.....

..............The sea cigüeña brings them! jk jk I have absolutely no clue how they actuially get it in and end up having a baby.

They do it like fish. pescado have sex don't they?, it's the same thing!

sirenas can't have children. o they could lay eggs...
If tu were watching The Little Mermaid, Ariel turned into a human so she could have a baby.

Well in pescado females usually lay eggs and the males fertilizes them once they are outside the female's body with semen.
So I'm pretty sure it's like that....

Ummm, ummm... they ummm never mind I'm too disturbed picturing how it might go about.

um well, haha.
I dont remeber how Ariel turned human but i guess the sirenas do that to get lucky then go back into the water o sstayu on the land wif thur hubby...

for God's sake it's just a fucking disney movie
it's for children & they don't have to explain everything there,i have no idea how to they have sex cuz they'r cartoons

They lay vibrant clear blue eggs and inside them tu can see the outline of a "mermaid". A merman then senses the scent of the eggs and he comes over and sperms all over them. It then turns into a darker blue gelatina, jalea like liquid and the
mermaid/men start to rapidly mover inside. Over the siguiente few weeks the eggs expand and tu can begin to hear the eggs sing the most beautiful peaceful música tu have ever heard. Then in the blink of an eye after 9 months the eggs literally vanish and thousands of mermaid/merman disperse into the ocean where they begin to develop into full grown species.