Nothing is impossible transsonic2000 !
Seaplanes is not a subject which is not so often discussed nowadays and only a few amount of pilots seem to be interested in.
Indeed, you can do your PPL SEAplane rating in some places in Europe like Italy at como base, in Scotland, Ireland, Poland, Austria, Sweden, Norway, Holland and in a few other countries.
On-track Aviation in UK has some useful information on their website about Seaplane training.