Mauritania
territorial sea: 12 nm
contiguous zone: 24 nm
exclusive economic zone: 200 nm
continental shelf: 200 nm or to the edge of the continental margin
Mauritius
measured from claimed archipelagic straight baselines
territorial sea: 12 nm
exclusive economic zone: 200 nm
continental shelf: 200 nm or to the edge of the continental margin
Mayotte
territorial sea: 12 nm
exclusive economic zone: 200 nm
Mexico
territorial sea: 12 nm
contiguous zone: 24 nm
exclusive economic zone: 200 nm
continental shelf: 200 nm or to the edge of the continental margin
Micronesia, Federated States of territorial sea: 12 nm exclusive economic zone: 200 nm
Moldova
none (landlocked)
Monaco
territorial sea: 12 nm
exclusive economic zone: 12 nm
Mongolia
none (landlocked)
Montenegro
territorial sea: 12 nm
continental shelf: defined by treaty
Montserrat
territorial sea: 3 nm
exclusive fishing zone: 200 nm