National Oyster Day – August 5, 2025

History of National Oyster Day

Oysters have been around for a long long time, and scientists believe they were one of the Earth’s first living inhabitants. In fact, they have found fossils of oysters that date back to when the dinosaurs walked the earth.

Not only have these little jewels been around for ages, but they have also been a source of food for just as long. Early humans preferred tossing oysters into the fire rather than prying them open with tools or stone, data shows. Archaeologists have also found evidence that proves people from the coastal regions consumed oysters regularly — fossilized oyster shells from various periods prove this without a doubt.

Oysters were important to many civilizations. The Greeks loved them so much that they began to cultivate oysters. They were the very first civilization in the world to do so. Fishermen would scatter pieces of broken pottery in places where oysters grew to encourage baby oysters to attach themselves to the pieces. They would then transport these pieces, baby oysters in tow, to other places. These guys even found a use for oyster shells, using them to cast ballots during voting time. Greek myths also began to feature the oyster — the famous Greek goddess of Beauty and Love, Aphrodite, is said to have been born from the sea in an oyster.

After Greek civilization declined, the Romans took up the mantle, continuing to hold oysters in high regard. They became part of the rich Roman’s meals and also appeared in Roman mythology. The Romans’ love for the oyster led to overharvesting, however, causing a scarcity. They attempted harvesting and transplanting them, but nothing stuck. By the time the world entered the 8th century, this rich man’s food was now considered a common delicacy.

Between the 18th and 19th centuries, the world entered a period called the Golden Age of Oysters. Even the famous satirist, essayist, poet, and author Jonathan Swift was a fan. There was a massive surge in oyster production, making it cheaper to procure. This led to the oyster being featured in dining rooms across the U.S. and Europe.

In the 19th century, New York gained the title of the world’s biggest producer of oysters. The New York Harbor apparently held half the world’s oysters before it was destroyed by overharvesting and pollution. History also documents how oysters are the reason behind New York building its restaurant trade. Oysters were such an integral part of this city’s economy that they even used the shells to pave roads and create cement, amongst other items. Apart from New York, multiple other states like Baltimore, New Orleans, and Philadelphia supplied oysters. They were in such abundance that oyster saloons — now called oyster houses — popped up everywhere. These were the precursor to today’s oyster raw bars.

With the railroad came a way to transport oysters quickly, and this opened up new markets for this delicacy. Two other major developments also spurred the oyster trade — canning and refrigeration.

Unfortunately, in a repeat of history, this rising demand led to overharvesting once again, and New York’s oyster beds went into decline. While the state did try to introduce foreign oyster species — and was moderately successful, this also brought disease, which destroyed most of the beds by the 1900s. The reduced production and increased popularity hiked prices, and the common meal became a rare delicacy once again, where it remains to this day.

While we do not know the origins of this day, we know it is celebrated mostly in the U.S. and the U.K.