Now I remember, too much fun reminiscing... I've had three other instances on mainland where just letting 'em know I was there, got one out of camp as I returned and the other two just kept on moving. Neither came back to my knowledge.

As a human that applies human traits to all creatures, if I were a bear that took the trouble to swim out to an island, I'd be harder to shoo, considering I'd have to swim all that way again on an empty stomach with nothing to show for my effort.  :D