3D Fish School Screensaver features schools of up to 100 marine or freshwater fish swimming among bubbles within an animated underwater backgrouns. The screensaver allows you to choose from saltwater or freshwater virtual aquarium or you can turn it into a sea bottom enjoying very soothing underwater effects and sounds. The screen saver comes with controls that allow you to set the quantity of fish or bubbles as fish swim their way around. If you have multi-monitors or a widescreen TV, you can enjoy a huge fish tank by using the multi-monitors settings of the screen saver. You can view the time by using the screensaver's digital 24/12 hour clock and calendar. Owners of old computers and laptops can use the advanced options to run the screen saver under their system with maximum speed and quality. The screen saver does not include any third party software, spyware, adware or viruses.