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1. 1:1,000,000-Scale National Wilderness Preservation System of the United States, 2014

2014. National Atlas of the United States. This polygon shapefile consists of National Wilderness Preservation System areas of 320 acres or more, in the United States, Puerto Rico, and the U... National Atlas of the United States.

2. Eelgrass Beds, Northeast United States, 2014

2014. SeaPlan. This polygon shapefile represents eelgrass beds in the Northeastern United States. Eelgrass (Zostera marina) beds are critical wetlands components ... Northeast Regional Ocean Council.