Four humpbacks near Point Retreat and North Pass

We spent some time on our boat and spotted four humpbacks near Point Retreat and North Pass.  We saw Sasha and finally saw Flame and her calf.  When we first spotted Flame, her calf was nowhere to be found.  Flame began quickly swimming north when she suddenly breached.  She then continued north, but her calf was still nowhere to be found.  We finally spotted her calf pretty far north of her but swimming towards her.  From what we saw, we are convinced she breached to communicate with her calf. It seemed like she was announcing her position or was telling him to get back to her.  I was relieved when we finally saw the calf.  I was worried something had happened to it.