Spatial Coverage
- Lewis and Clark County1
- Liberia.1
- Libya1
- Long Island Sound (N.Y. and Conn.)1
- Louisiana1
- Luzon (Philippines)1
- Maine.1
- Makkovik Bay Region1
- Manistee National Forest (Mich.)1
- Manistee National Forest.1
- Marquette County1
- Maryborough Region (Qld.)1
- Maryland.1
- Mason County1
- McCreary County1
- McKinley County1
- McLean County1
- Meade County1
- Mediterranean Coast (Cyprus)1
- Mediterranean Coast (Egypt)1
