Final answer:
Estuaries are one of the ecosystems found in intertidal zones. They provide nourishment and shelter for various species, and organisms in the intertidal zone are adapted to withstand tides and wave damage.
Step-by-step explanation:
One of the ecosystems found in intertidal zones is estuaries.
Estuaries are found where rivers meet the ocean. They have shallow waters that provide nourishment and shelter for young crustaceans, mollusks, fishes, and many other species.
The intertidal zone is an extremely variable environment due to tides. Organisms in this zone are adapted to being dry for long periods of time and withstand damage from the pounding action of waves.