Knobby Heads Courtesy of Thomas L. Conlin . Take a good look at a humpback whale's head. On the whale's upper and lower jaws and along their lips you will see knobby structures. Old Yankee whalers had a funny name for these. Before velcro we all had a hard time untying the knots from our shoelaces.
Knots have important role in navigating a ship.
Thanks to Hussain and Kevin at Iselin Middle School, we know that a knot measures the distance you travel within a time period. Whales are mighty hungry and need to replenish their bodies with lots of chow. Researchers estimate that they will eat about a ton of food each day during their stay at the summer feeding grounds. Good job researching this question, Ruchi and Melissa at Iselin Middle School. Because our months aren't all the same length, there were a few ways to calculate this question.