YouTube user Melissa Galieti captured this footage of what is described as a 10-foot (3m) great white shark (Carcharodon carcharias) feeding on a Pacific harbor seal (Phoca vitulina richardsi) off La Jolla, California. The footage was shot on October 2, 2012.
It’s unclear from the video how large the harbor seal involved was, as the carcass had already been fed upon to some extent prior to what is seen in the video. Preying on pinnipeds (seals and sea lions) is a behavior generally associated with larger white sharks. The shark seen in the video would likely be considered on the smaller end of the scale, in terms of size, of white sharks that target pinnipeds as prey items.
Check out Pete Thomas Outdoors blog for more information on the encounter.