Odell Down Under is a 1994 game for Microsoft Windows and Classic Mac OS that takes place in the Great Barrier Reef of Australia.

[3] The game was generally praised; School Library Journal cited the "realistic and beautiful" graphics and detailed field guide as strengths,[4] while Booklist called it a "marvelous introduction to life in a thriving underwater community".

[6] The player takes on the role of a fish who in turn must eat, stay clean and avoid being eaten by predators to survive.

In Tournament mode, the player plays every fish in the game, starting as the tiny silver sprat and eventually reaching the great white shark.

The game consists of nine screens, arranged in three levels from the sandy bottom to the reef's top, that various fish, including the player, move through looking for food.