Alcidae

Grassland

Comprised of grasses and broadleaved herbaceous plants, and are either without woody plants.

Marine neritic

Submergent (below extreme low tide), nearshore, on or over the continental shelf or oceanic island shelf.

Marine oceanic

The pelagic habitat deeper than and beyond the continental or island shelf.

Marine intertidal

Area of the shore between the extremes of high and low tides.

Marine coastal

Coastal habitats above the high tide mark.