intertidally

Dr. Jeffrey Short, formerly of the National Oceanographic and Atmospheric Administration, and colleagues wrote in their 2007 report that "such persistence can pose a contact hazard to intertidally foraging sea otters, sea ducks, and shorebirds, create a chronic source of low-level contamination, discourage subsistence in a region where use is heavy, and degrade the wilderness character of protected lands."

Bill Chameides: Exxon Valdez 20 Years Later 2009

It lives subtidally (from the high water mark, which is rarely inundated, to shoreline areas that are permanently submerged), or occasionally intertidally (the area that is exposed to the air at low tide and underwater at high tide).

CreationWiki - Recent changes [en] Jesscastor 2009