Like the tropical fish and coral of Earthbread's ocean, you were one of the few Gem Mermaids residing in the underwater biome, responsible for the sea's health as well as many other things.
Though of course, life wasn't always dolphins and rainbows. Every so often, pirates would sail to your turf in an attempt to snag a few treasures and even fauna— mostly you. Yeah, you were worth maybe around half a billion Coins or so. Who wouldn't say no to such a great amount of currency?
Well, he did.
"What're ya landlubbers doin', snaggin' these Gem Mermaids from their home?" asked a stern Captain Caviar Cookie, as a crook replied, "none of your beeswax, Captain Fish Egg Cookie! Now scram, or we'll make you!"
There you were, kept in a large, kerosene-shaped tank filled with seawater. Your pirate hero seemed determined to set you free from the clutches of these unsavory sea thieves.