|Appears in||Mario Party|
|Type||4-Player Coin mini-game|
|Time limit||90 seconds|
|Music track||The Wide, Wide Ocean|
The minigame takes place between the ocean and the skies filled with clouds. The four players are positioned in the ocean. There is a ship above the water, waiting for the players to retrieve Treasure Chests, while in the ocean, there are inhabitants that include a Sushi, a pair of Bloobers, fish, and coral. The minigame then starts.
The players have the opportunity to grab Treasure Chests from the bottom of the ocean and bring them to the top to earn Coins within the time limit of 90 seconds. Treasure Chests vary by size, weight, and where they were placed. Small Treasure Chests contain only a single Coin, medium chests contain three Coins, and large chests contain five Coins. To make the minigame harder, there is a pair of Bloobers that move within the water diagonally and a Sushi that swims horizontally. If a player touches one of the enemies, the player will be stunned for a few seconds; additionally, if the player touches them while holding a Treasure Chest, they will be forced to drop the object back to the ground. Players have a limited time staying underwater. If they stay too long, a counter will appear on top of their heads, starting with the number five. If it counts down to zero, they will drown and float back to the surface. There is no winner or loser.
The minigame can be purchased from the Mini-Game House for 250 Coins.
- – Move
- – Swim
- Game Rules – "Dive into the sea and bring up the Treasure Chests from the bottom. Press to dive."
- Game Rules (Mini-Game Island) – "Bring up the chests from the bottom of the ocean. Get 10 or more Coins to clear the game."
- Advice – "You'll start to drown if you are underwater too long. Come back to the surface for a breath once in a while."
Names in other languages
|French||Trésors maritimes||Maritime treasures|
|Minigames from Mario Party|
|4-Player minigames||Balloon Burst • Bombs Away • Box Mountain Mayhem • Bumper Balls • Buried Treasure • Cast Aways • Coin Block Blitz • Crazy Cutter • Face Lift • Grab Bag • Hammer Drop • Hot Bob-omb • Hot Rope Jump • Key-pa-Way • Mario Bandstand • Mushroom Mix-Up • Musical Mushroom • Platform Peril • Running of the Bulb • Shy Guy Says • Skateboard Scamper • Slot Car Derby • Tipsy Tourney • Treasure Divers|
|1-vs-3 minigames||Bash 'n' Cash • Bowl Over • Coin Block Bash • Coin Shower Flower • Crane Game • Paddle Battle • Pipe Maze • Piranha's Pursuit • Tightrope Treachery • Tug o' War|
|2-vs-2 minigames||Bobsled Run • Bombsketball • Deep Sea Divers • Desert Dash • Handcar Havoc|
|1-Player minigames||Bumper Ball Maze • Ghost Guess • Ground Pound • Knock Block Tower • Limbo Dance • Memory Match • Pedal Power • Shell Game • Slot Machine • Teetering Towers • Whack-a-Plant|