On Sunday, January 19th I went out on the Pride (Southern Discoveries) for a cruise and to try their buffet. At one point a lady took a wrong step and fell down some stairs so I ended up helping out with that a bit. Of course, we had to go straight back but I was able to go back out on another boat to see the Discovery Centre - a place I'd been meaning to visit since arriving in Milford.
The centre had a bunch of information on the ecosystem in Milford such as how the freshwater layer actually prevents sunlight from penetrating below a few meters. This actually enables deep water life to exist in ashallower habitat and therefore the Discovery Centre offers a unique opportunity to view such species as Black Coral (actually white) via a glass underwater chamber which essentially acts as a reverse fish tank.