Woman Whacked By Tail While Whale Watching

How do you know the little boat from which you're whale watching has gotten too close to the whales? When one of those whale's tails whacks you upside the head:

The video was shot off the coast of Baja, California. Thankfully, the woman in the video is OK. But the operators of this whale watching tour deserve to be investigated by the appropriate wildlife authorities for getting this close. They are endangering their passengers, whether from threat of a stray tail fin coming down on someone, or the risk of their little skiff being overturned and sending passengers into the water.