7.78 ha (19.22 acres)

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Hamford Water NNR is a coastal embayment with mud flats, marsh, and sands that is known for its large populations of over-wintering birds, including dark-bellied Brent geese, black tailed godwits, redshank, ringer and grey plover and shelduck. There are a number of birds that breed on the site, including nationally important colonies of little tern and avocet. The coastal grasslands above the salt marshes also support one of Britain's rarest plants ' sea hog's fennel. The reserve is also a good place to spot common and grey seals.