Shark Attack is an "underwater" platform game. The goal in each level is to find all artifacts and exit. The secondary goals are to collect all treasure, finish levels as quickly as possible and find hidden areas. There's unlimited number of "lives" and program saves the progress automatically after each level. Game is very colourful, lacks outright violence and is pretty easy, so CWF recommends it for kids. :)
Game can also be found in the web under a different name, "Kenny's Adventure".