100 Coins under the Sea

100 Coins under the Sea is the fifty-seventh course in the Story Mode of Super Mario Maker 2. It is set in the underwater theme and in the Super Mario 3D World style. It is posted by Eccentric Millionaire, and has a difficulty rating of 2/4 stars.

Layout
The level begins with a few Cheep Cheeps, Coins, and Blinking Blocks, along with a ? Block containing a Fire Flower. The next segment features some more Cheep Cheeps, along with groups of Deep Cheeps and a long row of Blinking Blocks with coins interspersed between it. A Clear Pipe then leads to a network of Clear Pipes to a room with a Blooper, followed by a Big Blooper later on. A Big Winged Blooper then appears just outside the next group of Clear Pipes, followed by two Bloopers next to three C-shaped Clear Pipes and a Big Winged Blooper next to the Goal Pole, which is only available if Mario has found every coin in the level.

Description
"Could someone indulge me by playing this course? It's simple. Collect 100 Coins and reach the goal. But watch out: I added Cheep Cheeps, Bloopers , and other traps!"

Enemies

 * Cheep Cheeps
 * Deep Cheeps
 * Bloopers
 * Big Blooper
 * Big Winged Bloopers

Trivia

 * The level's name is a spoof on the novel, alongside "20,000 Koopas Under the Sea", an episode from The Super Mario Bros. Super Show!.

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