Yes, that's what they are saying in the linked video, around the 1-minute mark: http://www.hs.fi/talous/artikkeli/Google+raotti+ovea+hakukon...

  [We will be] taking the heat outside of the building and 
  using cold [sea] water to remove it

So it could mean air cooling inside the building, using salt water to cool the air.

Additionally, they can use sacrificial anodes to reduce corrosion and apply an electric current to reduce growth of living things.