SOME PEOPLE SAY that the Ancient Romans in Rome enjoyed consuming oysters that had been harvested along the coast of Essex. It is said that these tasty molluscs were transported live from Essex to ancient Rome. A website (www.bbc.co.uk/news/uk-england-humber-69051462) noted:
“Oysters were highly prized by the Romans with some reports suggesting they played a key part in Julius Caesar’s decision to invade the British Isles. Many of the oysters were exported to Italy with Roman Emperors reportedly paying for them by their weight in gold.”
This quote refers to finding a Roman oyster processing site on the Humber estuary. Other places where oysters are cultivated include parts of the coast of Essex. These places are famous for the quality of their oysters. One of them is West Mersea on the island of Mersea, a few miles south of the city of Colchester. Today, this place is an important source of oysters. The gardens of houses in West Mersea are full of discarded oyster shells, both for decorative purposes and as a ground covering.
An oyster pit and the Packing Shed (in the distance)
Oysters are ideally cultivated in the brackish saline waters of estuaries. They feed by siphoning a large amount of seawater through their bodies, extracting nutrients from it. Sometimes, they collect sand and other impurities as the water passes through them. West Mersea sits at the mouth of the Blackwater River, and oysters have been grown and harvested there since Roman times. When oysters are mature enough to be harvested, they are placed in tanks filled with clean water which passes through them as they filter the water. This ensures that by the time they are sent to market, impurities such as sand have been removed from their digestive systems. Today, this purification process is carried out in sophisticated mechanised tanks, some of which irradiate the water with ultra-violet light to kill microbes. In the past, after being sorted for size, they were placed in wood-lined tanks filled with clean water. The remains of some of these now disused oyster pits can be seen rotting along the coastline at West Mersea.
In about 1890, a shed, now known as the ‘Packing Shed’, was constructed on an islet close to West Mersea. This building was built to be used for cleaning and sorting oysters before they were sent to destinations all over the world. Soon after it was built, it was blown away in a storm. In 1897, it was replaced by a new building, which remained in use until the 1950s. After that, it was hardly used and began to rot. Despite this, it survived the great storm of 1987. It became a picturesque ruin until 1992, when it was fully restored. Owned by the Tollesbury & Mersea Native Oyster Fishery Company, it is rented to the Packing Shed Trust, which uses it for a variety of purposes (including bird watching, weddings, art classes, parties, and celebrating special occasions). You can see this long, low building from many points on the seashore of West Mersea. On the day we were in West Mersea, we saw groups of young school pupils going on an excursion to visit the Packing Shed.
Several companies dealing in oyster cultivation and sales have sheds in West Mersea. There are plenty of eateries where you can sample these highly prized delicacies. We used to enjoy consuming them in the past before one of us had an extremely unpleasant reaction after eating some oysters at a good restaurant in London’s Kensington. The reaction was so bad that hospitalization was necessary. After that, both of us have, reluctantly, decided not to eat oysters again. Regardless of that, West Mersea is a delightfully peaceful place to visit – providing it is during school term time. We were told that during school holidays, Mersea Island becomes overcrowded and far from relaxing.



