Lobster locale (5)
'lobster locale' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for maine that I've seen before include "North-easterly US state" , "American state, capital Augusta" , "Part of America" , "N. US Atlantic state" , "North-east American state" .)
(Other definitions for sea that I've seen before include "Cause of flooding" , "The Med, e.g." , "& 14 Ozone" , "Large body of salt water" , "The Aegean, for example" .)