I guess I missed this video, released last year.  It's 7 minutes long, and gives us a good idea of the kinds of things one will see on a Galapagos cruise. It's fun - I even recognize a face or two, and see my old office.  If you're considering a trip to the islands, have a look a this, and it will give you an idea of what you are in for (but don't expecting the fun music track). 

 

https://www.youtube.com/watch?v=NKG2qH8778U