Man, Isle of territorial sea: 12 nm exclusive fishing zone: 12 nm

Marshall Islands territorial sea: 12 nm contiguous zone: 24 nm exclusive economic zone: 200 nm

Martinique territorial sea: 12 nm exclusive economic zone: 200 nm

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
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

Midway Islands
territorial sea: 12 nm
exclusive economic zone: 200 nm

Moldova
none (landlocked)