Mrs. Pigafetta Swims Well, by Reginald Bretnor (epub/Kindle)
Mr. Coastguard, this is what has happened to Pietro Pugliese, who is captain of the fishing boat Il Trovatore, of Monterey. Me, Joe Tonelli, I am his engineer. I know.
It is because of Mrs. Pigafetta, from Taranto. It is her fault. Also the porpoises. It is also because Pietro has been famous—
You do not know? You have not heard how one time he is the great tenore? Yes, in Rome, Naples, Venice—even in La Scala in Milano. Do, re, mi, fa—like so, only with more beauty. Caruso, Gigli—those fellows can only make a squeak alongside Pietro, I tell you.
So begins one of Reginald Bretnor's classic tales of the fantastic...