I was so anxious for this excursion, that I think it was the only thing I told people that I was doing on the cruise! I was not disappointed!!
You are transported by bus to their headquarters, where the guide will explain to you the easiest way to get into the wetsuit. Once at the building, men and women are sent to separate changing rooms (I can't speak for the men, but the women's room is not divided into single rooms). Some curtains would have been nice, but that is an individual preference and may not be important to all. The wet suit is supposed to be snug, and even though I am a larger person, it was not a problem for the company to accommodate my size. Booties, hoods and gloves round out the suit equipment. Masks and snorkels are provided, but I did see some people who brought their own. Personal items and clothing are collected into waterproof bags and locked into the back of a box truck that is driven separately to the snorkeling location.
A short bus ride to the snorkeling site includes further safety information and discussion of weight belts, if you want to get beneath the water completely. Because the suit is so thick, you can't go under. Trust me, I tried! A little downhill walk on a trail led us to the water's edge where the staff explains signals used, and just like that, it's time to get in! The water was cold and I'm not going to tell you that I didn't get cold, but I didn't get cold enough to make me want to get out! NO one in our group got out until we had to. It's not like you would believe when you think of snorkeling in Alaska. More of a cool feeling rather than "cold".
The tour representatives would dive down to bring up marine life for us to see, and touch if we wished. We saw all kinds of fish swimming around, jellyfish, different kinds of starfish---from tiny ones to gigantic ones--sea cucumbers, sea urchins, crabs, some little crabs in shells---probably everything that you would expect to see along the shoreline. I WISH that I had an underwater camera, or that the company would put together a DVD to sell of pictures of things that are usually found on this outing.
Afterwards, warm drinks and showers were available before returning to the port. Time went by way too fast because it was so much fun.