Lesser Antilles subduction zone 1970-01-01
Lichte Trough 1970-01-01
Lichtner Seamount 1970-01-01
Ligeti Ridge 1970-01-01
Lomonosov Current 1970-01-01
Long Forties 1970-01-01
Louisiade Plateau 1970-01-01
Madagascar Current 1970-01-01
Magic Mountain (British Columbia) 1970-01-01
Makarov Basin 1970-01-01
Malacca Banks 1970-01-01
Mascarene Basin 1970-01-01
Maud Rise 1970-01-01
Maud Seamount 1970-01-01
Mawson Bank 1970-01-01
Mawson Sea 1970-01-01
McDonald Bank 1970-01-01
Mediterranean Ridge 1970-01-01
Mid-Atlantic Bight 1970-01-01
Misteriosa Bank 1970-01-01