And so am I Mark.
During the time of the great British Raj, the numerous acclimatisation societies throughout the Empire introduced brown trout to rivers in Australia (including Tasmania), South Africa, Kenya, India, Pakistan, The Falklands, New Zealand, and I believe southern Argentina. In countries which bordered the sea, and which were cool enough, some brown trout became anadromus and migrated to the sea.
The Eerste (First) river which enters the Atlantic near Capetown, did for a period, have a run of seatrout. Unfortunately due to pollution from wine farms, the trout stopped running. Brown Trout stocked into rivers in the Falklands, Tasmania and New Zealand did become anadromus.
The evolution of the trouts is quite fascinating. They were a result of the melting of the glaciers at the end of a great ice age. They were cold water fish with a penchant for migrating to the oceans.