A three-mile stretch of Severn Estuary foreshore which has gone up for sale could be converted for possible use as aqua agriculture by a new owner.

The foreshore covers two parcels of land along the Severn Estuary from Newport and Cardiff between Peterstone Wentlooge and the Rhymney River Estuary.

The land is being sold on Thursday by Newport-based Paul Fosh Auctions on behalf of the Bristol office of Colliers International, which is managing the sale for the Joint Law of Property Act Receivers, Harry Dunger and Jon Cookson.

Keri Harding-Jones, of Paul Fosh Auctions, said: “It is extremely rare for part of the foreshore to come up for sale as most is owned by the Crown Estate. However, in this instance the freehold was owned privately and is made up of two parcels of land which lie along the Peterstone Wentlooge coastline between high and low tide marks.

“It is an unusual purchase but the land could be of interest to those with an environmental interest or for an amenity type use. So far we have had enquires from a huge range of different parties including even the potential for aqua agriculture.

“The land is currently used by the Wentlooge Wildfowl and Conservation Association whom we understand hold the relevant permission from Natural Resources Wales for their sporting and conservation activities.”

Jay Ridsdale, a director of Colliers International, said: “It is very unusual for foreshore to be available for purchase in the UK as the majority of it belongs to the Crown Estate. However this section of land is freehold and is likely to attract interest from a range of purchasers.”

The two sites total around 800-900 acres and adjoin the Wentlooge Levels Special Landscape Area and the Peterstone Marshes SSSI. The area is designated a Marine Special Landscape Area. The Wales Coastal Path runs along the shoreline in front of the foreshore.

Jay Ridsdale said: “The land comprises an area of mudflats and salt marshes home to a range of species including wading and migratory birds.

“The land is understood to be within the proposed Cardiff Tidal Power Lagoon. It therefore expected that it will be of interest to purchasers, including amenity users, those with an environmental interest and investors.

The property has a guide price of £20,000- £25,000 for the freehold of the foreshore which is defined as the area between high and low water marks.

The foreshore property goes up for sale alongside some 64 other properties at Paul Fosh Auctions sale on Thursday, March 24, at The Park Inn Hotel, Circle Way East, Llanedeyrn, starting at 5pm.