Definitions for "SUBTIDAL"
strip adjacent to the shoreline that is not uncovered by the tide.
the area of the shore bottom that is always covered by water and is never exposed at low tide.
Pertaining to the marine environment below the lowest level of low tide.
Areas (including the water column and bottom substrate) that are always beneath the surface of the ocean.
Keywords:  tidal, flooded, edge, near, waters
area usually flooded near edge of tidal waters