When selecting between Galapagos Cruises the most important factor to compare is the cruise itinerary. The best cruise itinerary is one that offers the broadest range of diversity. Most travelers decide on a Galapagos Cruise to see how the wildlife evolved differently between islands. A good cruise itinerary will let you see evolution in action. It is in witnessing firsthand how these animals evolved differently from each other you can observe Darwin's Theory of Evolution up close.