Defra say: "It is generally acknowledged that we lack a strategic, forward looking framework for managing the marine area as a whole." (p 31 consult doc)
The seas are a three dimensional dynamic play and work ground , generally public access.
2002: Safeguarding our Seas - this report from Defra gave the debate on ecosystem management "legs"
2004: Safeguarding Sea Life
2004: Turning the Tide
Make sure you understand the distinction between an EIA and SEA
Response of BSAC to the Marine Bill