I’ve been painting and sketching native oysters, Ostrea edulis. I buy them from oyster fishermen at Mylor in Cornwall near Falmouth. It was bitterly cold then and it’s pretty cold now.
It takes a long time to establish a native oyster bed. They were a major source of cheap food. In 1851, for example, a round 500 million oysters were sold through Billingsgate. Our oyster beds were destroyed by a series of cold winters, surely not the first though, in the mid 20th Century, and then pollution, the parasite, Bonnania Ostrea, the beastly slipper limpets and oyster drills which drill holes into them and eat it contents, they are a big threat for commercial oyster farms.
Now they can only be collected under license in Scotland.
Oysters change back and forth from female to male according to the temperature of the water. You get in the bath nice and hot, go to sleep, and wake up in cold water, surprisingly different. Well, surprising the first time, but native oysters can live for 20 years so they may get used to it.

Native Oysters, acrylic on canvas 50 cms x 100 cms
You can see my work in London at the The Flying Colours Gallery and at Oliver Contemporary
All photographs by James Forshall