it's main propulsion device is gone.
In the first picture especially the tail flipper feet whatever are clearly visible.Hard to imagine it getting very far with no tail
Most of these bites generally happen rather close to shore, no?
Is there a law that says the seal died right there, vs it hauled out somewhere else, got stormed/high tided, and washed up on the beach? Limited personal experience and this thread tell me there's generally an assload of current at the place.