Glacier Bay is one of the most awesomely beautiful places on Earth! We took a smaller boat (not one of the huge cruise ships) that can get really close to the glaciers.
At the entrance to the Bay which is a National Park we picked up a Park Ranger who accompanied us to the most scenic & interesting places......we saw whales; mountain goats; bears; seals; many kinds of birds & of course, the glaciers. The sound of the ice breaking off (calving) is something I still recall.
I'm sure you'll hear it one day when you visit Glacier Bay!