NES

Disney's The Little Mermaid

The Title Screen... Lovely

Story scene

I found a shiny shell :)

Treasure that increases the power of your bubbles

I have an enemy trapped inside a bubble

The first boss is a shark, and the fish are perfect for throwing at him

This is what appears after you beat the boss, collect it and you move onto the next level

Stage clear

Stage 2 -- the sunken ship

A ghost fish inhabiting the sunken ship

The boss eels who occupy the sunken ship

Every platform game needs an ice level, so here is the sea of ice

"Mermaid out of water" story

Usually, piranhas are freshwater fish

The boss walrus

Stage 4

This captain fish boss commands the cannons on this sunken ship to fire at you

Stage 5 -- Ursula's castle

The fearsome stone mouths are the doorways that Ariel uses to transport around the castle

The witch herself

The witch's final form