Amazing
Great place to hop a cruise around Milford Sound, nice lounges inside. Limited food available so be sure to grab a bite before you arrive. We went with the Go Orange tour boat and got lunch on board which was quite nice, the price was fantastic and the staff were very friendly! Would highly recommend this operator. There is plenty of free parking available onsite.
Not recomended if you have ever been to any underwater observatory! (And probably even if you haven't). They say there are deep water creatures because less light penetrate the fresh/salt water layers. In my opinion it looks just as lit as it should be at 10 meters. All the creatures seem to be the usual shallow water creatures except for the black coral and it's snake star. But the coral is planted into the observatory walls and no bedrock coral is seen. We went to the observatory after 13:35 Mitre Peak cruise. It seemed that the observatory was about to close so we had a limited time there and left with all the crew on their boat. Tickets are 36$ per person.