I thought they used knowledge of past years and shared sightings to locate whales as sonar is somehow bad for the whales. It's one of the reasons many tours don't guarantee you will see them since they want to observe and not disturb whenever possible.
11 cruises in 2012, 90 nights at sea visiting 15 countries
8 cruises in 2013, 56 nights at sea visiting 7 countries
Next cruise: None scheduled
PM me if you need a cruisemate for any Europe, transatlantic, or Panama Canal cruises
Date, ship, cost pp