Fishdom H2O: Hidden Odyssey

Fishdom H2O: Hidden Odyssey is a hidden treasure hunting game released on April 10, 2009 by Russian studio Playrix. The game was originally released for Microsoft Windows and Macintosh computers, but was later released for the Nintendo 3DS on July 4, 2013 in North America. The game has the player go through the game as Jennifer (Jennie), an intern at a marine biology institute. Her grandpa, called Grandpa Jack throughout the game, says that she should create fish tanks with unique fish and decorations over her summer break in order to impress her boss, Old Barny. The game then has you dive for hidden treasure in various levels.