Other than bull sharks, which can survive in both saltwater and freshwater, one could understand why a group of fishers were so stunned when they saw a seal being attacked by a shark in the Columbia River.

The incident, captured by Josh Robb while crabbing near Astoria, Ore., this past Saturday, clearly shows what officials are deeming a salmon shark or smaller Great White.

*WARNING* Video is graphic and language is coarse

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