Marine wetlands are best described as being found in which of the following environments?

Marine wetlands are characterized by their proximity to coastal areas and oceans, where saltwater mixes with freshwater influences from rivers and estuaries. This unique environment results in a rich biodiversity and specific ecological functions that support various species and habitats.

Coastal wetlands, such as salt marshes and mangroves, are critical for their ability to buffer coastal regions from storms, filter pollutants, and provide breeding grounds for marine life. The vibrancy of marine ecosystems is heavily dependent on these coastal wetlands, highlighting their significance in maintaining ecological balance.

The options representing freshwater environments—like lakes, ponds, and inland marshes—do not fit the definition of marine wetlands, which specifically require saline or brackish water. While salty tidal marshes are a subset of marine wetlands, the broader term encompasses all coastal areas affected by the ocean. This clarification reinforces why the best description for marine wetlands is their presence in coastal areas and oceans.