3D Rocky Reef has realistic animations of moray eels, manta rays, angelfish, clownfish, lionfish and more. Background is an rocky reef with moray eel holes and crevices and ridges where the fish can hide. Oyster reef in foreground adds additional realism and depth. Demo version screen saver expires in 7 days. Has aquarium bubble sounds. Want a soothing nightime scene? Just set the time of day to nightime and a dark shadowy blue hue is cast on everything. Prefer a dusky sunset scene? The dusk setting produces a deep orange hue. Demo contains full set of features. Have fun customizing this screen saver to your preferences: tint, brightness, time of day settings, sound mute and volume control you can play your own mp3 music. Screensaver contains animated gif images. Provides password protection. Available at a substantial per screen saver discount when purchased in a set. Also available as a 3D animated eCard. NOTE: When you buy this OS X version you can request a free OS 8&9 version.