It is aligned from south-west where the Buckingham River enters, to north-east where it opens into the Arafura Sea.
It is largely bordered by intertidal mudflats, with patches of mangroves along the lower reaches of the Buckingham River.
[1] The bay's intertidal mudflats and seasonally flooded coastal plains have been classified by BirdLife International as an Important Bird Area (IBA).
Species for which count data indicate the site's global significance include black-tailed godwit (6000), eastern curlew (700), and great knot (5000).
A waterbird breeding colony in the mangroves near the mouth of the Buckingham River contained 5500 birds in 1999, predominantly pied herons and intermediate egrets.