Seaweed harvesting requires a licence from the Crown Estate which governs the coast up to 12 miles from the shoreline, but seaweed farming (macroalgae aquaculture) requires a licence granted by the Marine Management Organisation (MMO) in England, the DAERA (inshore), MMO (offshore) in Northern Ireland, Marine Scotland in Scotland and either the National Resources Wales (NRW) (inland) or the MMO (offshore waters) in Wales.