It is proposed that these are the remains of sediment-filled tubes, "most likely the feeding traces of animals grazing on algal mats in shallow subtidal or intertidal environments."

Living shorelines protect surrounding intertidal and riparian environments, improve water quality by filtration of runoff, decrease erosion rates and create terrestrial and aquatic habitats.

These include the crab-eating macaque, Macaca fascicularis, an opportunistic predator that scours intertidal environments.

However, mortality in intertidal open coastal environments is often high, resulting from battering from driftwood and other debris, wave pounding, predation, desiccation, and disease.

Activities such as logging and farming upstream can increase the sediment load of rivers, which may hurt the intertidal environments around spits by smothering delicate habitat.

These were probably deposited in lagoonal and intertidal environments on a marginal platform.

These were deposited in lagoonal, intertidal and sabkha environments, respectively, that became established behind the barrier complex.

Zonation also occurs in intertidal and marine environments, as well as on shorelines and in wetlands.

He was correct in recognizing that these were the oldest footprints on land, having been produced in intertidal and supratidal environments during what would now be called Cambrian times.

Eurypterus were most probably marine animals, as their remains are mostly found in intertidal shallow environments.