Silent assassin or invisible octopus.

Do you can see water in the aquarium?

Beware of invisible cows

Bringing back some Bill Clinton jokes...

A butterfly with transparent wings? Surely not. Yet there is a species that exhibits this trait. Take a close look at the incredible Glasswing, an enchanting species that confounds science.

Salma, a Palestinian widow, has to stand up against her new neighbor, the Israeli Defense Minister, when he moves into his new house opposite her lemon grove, on the green line border between Israel and the West Bank. The Israeli security forces are quick to declare that Salma's trees pose a...

The aim of the game is to guide your cursor to the goal. However, your movement has been reversed. Hitting an 'i' icon will cause you to go invisible for five seconds. On some levels you might need to collect a key to gain access to the goal. The blacks key will have a strange effect on your player.

vAbsolutely invisible.

Use extreme caution and drive very slowly in this open range.

Clay Aiken - Invisible

One guess where the invisible dog is.

Guide your mouse cursor from start to finish avoiding all obstacles. The catch is that your cursor is invisible.

Ashlee Simpson - Invisible

Two guys felt like doing a completely random prank, so they stood on either side of a road pretending to hold a rope!

His mission: save the world (from crap dolls).

Bacteria are people too!