UndertheSea是于1989年由华特迪士尼所制作的第28部经典动画电影长片《小美人鱼》的主题曲。《小美人鱼》（英文原题：TheLittleMermaid）是由丹麦作家汉斯•克里斯蒂安•安徒生于1836年发表的童话作品《美人鱼》所改编。
此部动画的初稿始于1988年9月23日，并由华特迪士尼影业于1989年11月17日首次公布。它在美国的票房收入超过八千四百万美元，在国际上的票房收入亦突破九千九百万美元。
UndertheSea此曲由AlanMenken所做。AlanMenken，出生于美国纽约州新罗谢尔市（NewRochelle），著名的钢琴家、百老汇及电影配乐作曲家。他至今已获8项奥斯卡奖，是历史上获得最多奥斯卡奖的在世人物。
Ariel, listen to me
The human world, it's a mess
Life under the sea
Is better than anything they got up there
The seaweed is always greener
In somebody else's lake
You dream about going up there
But that is a big mistake
Just look at the world around you
Right here on the ocean floor
Such wonderful things surround you
What more is you lookin' for?
Under the sea, under the sea
Darlin' it's better down where it's wetter
Take it from me.
Up on the shore they work all day
Out in the sun they slave away
While we devoting full time to floating
Under the sea
Down here all the fish is happy
As off through the waves they roll
The fish on the land ain't happy
They sad 'cause they in the bowl
But fish in the bowl is lucky
They in for a worser fate
One day when the boss get hungry
Guess who's gon'be on the plate
Under the sea, under the sea
Nobody beat us, fry us
And eat us in fricassee
We what the land folks loves to cook
Under the sea we off the hook
We got no troubles, like is the bubbles
Under the sea, under the sea
Since life is sweet here
We got the beat here naturally
Even the sturgeon and the ray
They get the urge 'n' start to play
We got the spirit, you got to hear it
Under the sea
The newt play the flute
The carp play the harp
The plaice play the bass
And they soundin' sharp
The bass play the brass
The chub play the tub
The fluke is the duke of soul
The ray he can play
The lings on the strings
The trout rockin' out
The blackfish, she sings
The smelt and the sprat
They know where it's at
And oh, that blowfish blow
Under the sea, under the sea
When the sardine begin the beguine
It's music to me
What do they got, a lot of sand
We got a hot crustaceuan band
Each little clam here
Know how to jam here
Under the sea
Each little slug here
Cutting a rug here
Under the sea
Each little snail here
Know how to wail here
That's why it's hotter
Under the water
Ya, we in luck here
Down in the muck here
Under the sea
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