Questions with the keyword 'invisible'

• Is it possible that there is a material that is invisible ( like the invisibility cloak )? If not, is it possible to by anon-232910 to Anna Comments: (So far, one comment )
• Is there any organism in the universe that can camouflage completely to their surroundings? Kind of like the by anon-232910 to Rebecca Comments: (So far, one comment )