I was lucky enough to have a flight in a BC Airlines Mallard in the 70s. The flight was a round-robin trip from Vancouver to Tofino to Tahsis and return to Vancouver.
My colleague and I were only going as far as Tofino (an ex-RCAF wartime airfield). Tahsis on the other hand had no airfield and the Mallard landed in the water (
Village of Tahsis | The Heart of Nootka Sound)
Our departure was delayed due to a maintenance issue. I have a vivid memory of looking out of the gate window, through the Mallard's rear-door and seeing a pair of legs in white overalls, sticking out of the tail cone.
When we were ready to go, the Captain came up to us and said "You're the only two going to Tofino. Since we are late, would you mind if we flew to Tahsis first and then drop you off at Tofino on the way back?" So I got to experience a water landing in a flying boat!
After landing, the gear went down and we taxied up a slip-way and shut down. The takeoff was the most interesting part. Tahsis is in a fiord and there was no wind, so the water was like a mill-pond. It took forever to get airborne - it seemed to be at least a mile.
A very memorable experience. I have some photos, but unfortunately they are in storage.
Back to Jimmy Buffett, he has had quite an amphibious airforce. Besides the Albatross, he had a Widgeon, which he crashed and survived. He currently has a Goose and a Caravan on amphibs.
For boring land-based flying, he has a Stearman, Pilatus PC-12 and a Falcon 900. Not bad for a rock-and-roller who sings about sailing and sharks!