I had a dream the ocean was full of soda

Answer: Fanta sea

Sea foam often does make the ocean look like soda, and combined with an orange sunset, make it easy to imagine the bubbling waves are this carbonated favorite.'

Explanation for the kids (and bad puns)

A fantasy is a term for an imaginary situation or daydream that sounds a lot like the well known brand of fruit flavored sodas, Fanta. Fanta originated in Germany as a shortened version of the word 'Fantastisch' (fantastic) which means having fantasy elements or so good it's like a fantasy.