What best describes a tidal pool?

What best describes a tidal pool?

• A. A shallow pool of seawater that forms on the rocky intertidal zone, home to various marine organisms
• B. A deep-sea trench
• C. A freshwater lake
• D. A man-made pond

Answer: (A)

A tidal pool is a shallow pool of seawater that forms on the rocky intertidal zone when the tide recedes, trapping seawater in depressions in the rock. This creates a small, coastal habitat that hosts various marine organisms adapted to changing conditions as the water level and salinity shift with the tides. The other options don’t fit: a deep-sea trench is a far offshore, deep feature; a freshwater lake contains non-saltwater inland; a man-made pond is not defined by tidal action.