Marine and Coastal Access Bill [HL]

I should like to probe one further point. Clause 143 has a wonderful list of definitions of what this section contains. I can see no definition there of sea fishing. Given the view of the noble Lord, Lord Tyler, on what fun lawyers will be having with a phrase like this, does the Minister know whether sea fishing is defined anywhere in law? It seems to me that it could apply to somebody trawling for fish in the sea. I have spent time trawling a line for mackerel; I do not know whether that counts as sea fishing.