Much is left up to the imagination when you watch koholā (humpback whales) from shore on Hawaiʻi Island. You will see plenty of blows in the distance, as well as tail and pectoral flipper slaps. You may luck into spyhopping or a dramatic breach — but you need binoculars or a spotting scope to really see what’s going on. Mostly, you have to be patient and fill in the visual blanks.