The photos are all from Doubtful Sound...
More information about beautiful waters
and surrounding areas can be found here.
The photos are all of different places
in the beautful Doubtiful Sound
and are listed below, left to right, top to bottom.

Bauza Island
Channel Hall Arm
Crooked Arm
Fergerson Island
Hall Arm
Seymor Island
TeAwaatu Channel
Vegetation Hall

I have included two maps below...
the first is the bottom of New Zealand's South Island..
and the second is of the Doubtful Sound area
so you can get a good idea on it's size.