Ceiling slimes were a green species of a slime-like consistency that regularly excreted green balls of slime.
A ceiling slime hanging from the top of the London sewers. (GAME: Dalek Attack [+]Loading...["Dalek Attack (video game)"])
During the 2254 Dalek invasion of Earth, several ceiling slimes had taken over the London sewers, with one dropping slimeballs directly in front of a trapped hostage. During this invasion, the Seventh Doctor and two Daleks travelled past many ceiling slimes attached to the top of the London sewers. (GAME: Dalek Attack [+]Loading...["Dalek Attack (video game)"])