Milford Sound Underwater Centre, New Zealand
This is not part of the tour and costs and additional $25.
Gives you the opportunity to get down to Milford’s salt water layer and observe the wealth of wildlife.
This isn’t like Loch Ness, where you might have the odd sock floating around, there are many fish, corals and life going on 10m under.
These fish were showing off for me.
Notice the particularly ugly one at the front.
Weblinks: Milford Sound Underwater Observatory