The purple shore crab is a common crab of the family Varunidae that is indigenous to the west coast of United States, Canada, and Mexico. H. nudus was first described in 1847 by Adam White, and in 185
Front, bottom, and top views of the Purple Shore Crab
Front facing image of H. nudus
The intertidal zone, or foreshore, is the area above water level at low tide and underwater at high tide; in other words, it is the part of the littoral zone within the tidal range. This area can incl
The rocky shoreline of Saint-Malo, northwestern France, with a stripe of the black lichen Hydropunctaria maura at the high tide line
Tide pools at Pillar Point showing zonation on the edge of the rock ledge
A rock, seen at low tide, exhibiting typical intertidal zonation, Kalaloch, Washington, western United States
A California tide pool in the low tide zone