Noisy oysters interfer with ships' ears.  From Popular Mechanics, 1930.

"I explained that he had discovered the secret sorrow of my soul—the lack of oysters."  From Harmsworth Magazine, 1899.

You've heard of a bearded clam, but here's a mustachioed oyster.  "The gift that fell from heaven."  From Stories in Precious Stones by Helen Zimmern, 1873.

"Noises made by oysters hamper sea radio."  From Popular Mechanics, 1928.  Related: "Photograph noises on ships to end annoying sounds."  (Works like a charm.)  From Popular Mechanics, 1929.

"I will not be sworn but love may transform me to an oyster."  From The Sketch, 1904.

Here's an appariton of the letter R frightening an oyster.  From Judy, Or The London Serio-Comic Journal, 1878.

From Prof. Oddfellow's sketchbook:

The world is figuratively one's oyster, and "the world may undoubtedly be an oyster, though to whom it would belong, to whom it would be answerable in that capacity, is a great deal less certain.  It's something that will have to remain a matter for conjecture until science comes up with a definitive answer." —N.F. Simpson, If So, Then Yes