Jump In: Bears can swim and love water, but they are not down with wrestling large prey while staying afloat. If there's water nearby, get in and go deep.
Make Some Noise: Bears can make some intimidating noises, but they aren't a fan of noises they are unfamiliar with. So bring the noise and live to tell about it.
Dirt: Throwing fistfuls of dirt in the air and at the bear can cause it to be confused and disoriented, as well as obstruct its eyes. Start slinging mud.
Calm The Charge: While it may be the last thing on your mind, calmly standing your ground when a bear is charging can be the best attack deflector. If you get a bluff attack as a warning, stand, wave your hands, and talk calmly to the bear.
Kick It: A straight-line kick, like to the face, neck or belly, can be disorienting enough to scare a bear away. But know that it needs to be a well-placed, strong kick. A punch will do nothing.