SURPRISE! Watch this video of Great White sharks using the element of surprise to catch hapless Cape Fur seals who are forced to cross a narrow strip of shark-infested water (literally) to go fishing for their own food. Amazing. (STUNNING 3 min video below the fold)

from the BBC Documentry Planet Earth

Listen for the line, towards the end of the clip, where the narrator explains why the Great Whites go hunting where they do: “…for only these waters contain sufficient food necessary to fuel such a ravenous predator.”

That reminds me of some business models.
Thanks to Kottke for the tip.