Here is a very close-up shot of an adult female coastal brown bear (grizzly) eating a clam at Lake Clark Alaska. The bears make their way out to the mudflats at low tide when they smell the clams. The tides are intense as they rise/fall 17 ft so when it starts coming in you had better get to higher ground.
1/800 sec @ F11, ISO 1600, evaluative metering, +1 exposure compensation, uncropped @ 500mm from Skimmer ground pod.