Mermaid Pisces asked about this song from H2O Just Add Water, so enjoy your request! I thought it would be fun if, when Sofia turns into a mermaid for the first time, she sings this as she gets used to her new power. Later on, when they rescue Oona from Cedric, she and Cora sing this to help Oona feel better, since this is also one of her favorite songs. H2O Just Add Water is not mine.

Sofia (when she turns into a mermaid for the first time): I've got a special power
That I'm not afraid to use
Every waking hour
I discover something new

Oona: So come on this is my adventure
This is my fantasy
It's all about living in the ocean
Bein' wild and free

Cora (spoken): Oh, I love this song!

Sofia (spoken): Want to join us?

Cora (spoken): Okay!
(sings) 'Cause I'm no ordinary girl
I'm from the deep blue underworld
Land or sea, I've got the power
If I just believe

Sofia: 'Cause I'm no ordinary girl
I'm from the deep blue underworld
Land or sea, the world's my oyster
I'm the pearl, no ordinary girl

Oona: We've gotta stick together
'Cause the best things come in three
I want it to last forever
All the magic and fun at sea

Sofia: So come on this is our adventure
There's no telling where we'll go
But all I want is just to live amongst the H2O

Oona: 'Cause I'm no ordinary girl
I'm from the deep blue underworld
Land or sea, I've got the power
If I just believe

Cora: 'Cause I'm no ordinary girl
I'm from the deep blue underworld
Land or sea, the world's my oyster
I'm the pearl, no ordinary girl

Sofia: Come along it just gets better
So much to do and just so little time
'Cause it all depends on whether
You wanna leave the land above behind

Sofia/Oona/Cora: 'Cause I'm no ordinary girl
I'm from the deep blue underworld
Land or sea, the world's my oyster
I'm the pearl, no ordinary girl