I am sorry that it is taking a significant amount of time to prepare a response. The issue raised by the hon. Member are complex and cover both transferred and reserved matters.
Under Schedule 3 to the Northern Ireland Act 1998 the foreshore, sea bed and subsoil and their natural resources (except so far as affecting harbours) are reserved matters. Thus, marine nature conservation in the territorial waters is the responsibility of the Secretary of State. However, at operational level, his functions are carried out by the Department of the Environment in Northern Ireland (Environment and Heritage Service).
Given the delay, I would be happy to meet with the hon. Member to discuss the issue in more detail.