In the episode "Lyla Alone", Sirena sings this to distract the Ocean Cafe customers so that Nixie can get Lyla out of the cool room.
"La la la la la la! La la la la la la!
How'd you like to come and play in my garden,
and swim in coral caves in the sea?
How'd you like to come and play in my garden,
and swim in coral caves in the sea?
Periwinkle, starfish splashing and dancing!
So won't you come on down here with me!
We can build sand castles,
finding pearls and swim with turtles.
Would you like to come and play in my garden?
So come on down and play with me?
Just swim around and stay with me,
and share that ocean magic with me!