It is managed by the Essex Wildlife Trust.
[1] The site is mainly grazing marshes, but there are also areas of rough grassland, saltmarsh, seawalls and reedbed.
Flowering plants include hairy buttercup, knotted hedge-parsley and the nationally rare least lettuce.
There are breeding birds such as Corn buntings and yellow wagtails.
[1] There is access by a footpath from Marsh Lane.