There was. Didn't tape it, but here's the scoop:

They only do this off one area of South Africa. The southern fur seals swim along near the surface. The white sharks cruise along the bottom while scanning upwards. They have a camouflage advantage because the water is clear near the bottom but murky on the surface, so they can see the seals but the selas can't see them. When they find one, they shoot up really quickly before the seal can react and go flying out of the water with seal in mouth.

Amazing. On the show they had a dummy seal with a down-looking camera so they could get a split second warning before the attack to start shooting still photos for Nat'l Geo. There was maybe a 1/4 sec. time from when the camera saw the shark to when it hit the dummy. Barely enough time to tell the camera man to shoot.