Although the video quality is not the best, here's an interesting sequence of a great white in pursuit of an injured seal. The location is at Seal Island which is a small land mass located a few miles off the northern beaches of False Bay, near Cape Town, South Africa.
According to the poster, the great white attempted to take the seal in a breach but missed. The sneak attack resulted in the seal being injured and thus, the pursuit began.
The video was posted by SaylorKel and is 1:48 in length.
Photo screenshot from video.