How do I make my skin transparent?

http://pm1.narvii.com/5924/f6a58b5b0bd3f5c051bdfa703ca84c05c56f8acd_hq.jpg

The guy in this picture has a transparent skin. Can anyone tell me how to get it?
From what I know, he is using Minecraft Version 1.9.


As used in the very old Ghost Squadron PvP map by SethBling...

You can create a ghostly effect by enabling visbility on invisible teammates.
The gist of this is simple:

  • Create a team
  • Assign yourself to that team
  • Allow that team to see invisible teammates
  • Become invisible

Essentially, enter the following commands:

/scoreboard team create team team
/scoreboard team join @p
/scoreborad team options team seeFriendlyInvisibles true
/effect @p minecraft:invisibility 9999 1