Shark attack at High Head

We witnessed this shark attacking a seal at the beach on High Head Road, at the north end of the trail from Head of the Meadow.
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I captured this on the morning of Nov 26th, when I was walking on the beach in Cape Cod with my family. We were looking out for seals, and werent disappointed on that front. The shark came from nowhere.
As far as the seal goes, there was nothing we could do - the shark tore a huge gash in its lower flank, and it bled out on the beach, and died within about 10 minutes. We just kept our distance and watched nature take its course. Incredibly sad to watch for sure.