Hundreds join Whitsand Bay silt dumping protest
20 January 2014 Last updated at 08:43 GMT
Hundreds of campaigners have protested against the dumping of silt dredged from Devonport docks in Plymouth.
Critics say the silt is harming marine life and seawater quality where it is dumped in Whitsand Bay, Cornwall.
The Ministry of Defence (MoD) says the dredging is essential to its work at the dockyard and is licensed by the Marine Management Organisation.