


Their exhalations can have different shapes depending on the activity and downtime length. Here you can see three of the most common shapes, v-shaped, tall and bushy, and heart shaped blows. With new calves most of the exhalations are barely visible until they gain some weight, most of the time this takes only hours.
It was nearly 20 years ago when I heard my first exhalations, which came from a mother and calf blue whales. I was working as a tour guide at Point Sur Lighthouse and the pair were in the kelp beds next to shore in front of the old World War II listening station. After unlocking the highway gate and driving in I clearly remember hearing the sounds when I closed my car door, feeling a little puzzled trying to figure out what the source of the noise was. I recall standing on the bluff, about 20 feet above the largest animal I have ever seen, and her calf. The calf appeared quite clumsy, the tail flopping from side to side, and the little one seemed to be having difficulty holding up her/his head. The blows of the mother echoed off the hillsides and her calf’s blows seemed to be a small punctuation. During the day the pair stayed in this little bay, and over time the calf, much to my astonishment, was growing stronger by the hour. After our last tour when it was time to leave and lock up the gate, I spent a quiet hour sitting on the grassy knoll and contentedly watched the pair. The calf no longer was floppy and could raise its head quite well. When it wanted to take a snack it would dive down into the kelp below mother, coming back up after several moments. The pair rubbed on each other and I watched the calf look into mother’s eye. I was hooked forever.
According to whaling records each type of whale has their own height and shape of exhalation. This was the first method the whalers knew what whale was ahead and make the decision whether or not to pursue the animal. In Hawaii we have sperm, fin, orca, false killers, melon headed, pilot, bottlenose, spotted, and spinner dolphins. Although the dolphin species are more difficult to see, sperm whales would stand out like no other. Toothed cetaceans have one blow hole, while baleen whales have two. Since sperm whales blow hole is on the left side of the head, their exhalation is straight out over 10 feet and at a sharp angle, right or left depending on their travel direction. We have not seen sperm whales on a whale watch yet, but are always looking for them.
From the time we leave the harbor, passengers and crew are on the lookout for the blows of our cetaceans. A single blow with humpbacks could be a singer, tall blow with a short one next to her would be mother and calf, and multiple blows in one tight area could be a group of competing males. Cameras in hands with high excitement, the group of hat wearing visitors all smelling of various brands of sunscreen take their places at the railing as we head out. We are extending our marine safaris well into April this year and we would love to have you join us.