What impact do ocean tides have on coastal ecosystems?

Ocean tides play a crucial role in shaping coastal ecosystems by influencing both salinity levels and the distribution of marine species.

When the tides rise and fall, they bring in seawater that can alter the salinity of coastal environments. This change in salinity can affect the types of organisms that can thrive in these conditions, as various marine species have different tolerances to salinity fluctuations.

Additionally, the movement of tides creates a dynamic habitat that affects where marine species can be found. Species that rely on tidal pools or intertidal zones will experience varying exposure to the air and water, which affects their feeding, breeding, and overall survival. The ebb and flow of tides can also transport nutrients, larvae, and other organisms, contributing to biodiversity and the health of the ecosystem.

Thus, the correct choice reflects the multifaceted impact of tides on coastal ecosystems, as they do indeed influence both the salinity levels and the distribution of marine life.