There are many marvelous phenomena in nature, and different bodies of water exhibit distinct colors. Generally, river water appears light green, lake water appears blue, and seawater appears deep blue.

Many netizens have engaged in intense discussions online, eager to understand the differences between these three types of water bodies. Today, let's explore the mysteries of nature and delve into the distinctions between river water, lake water, and seawater.

As mentioned, these three bodies of water belong to aquatic environments, and their differences lie in water flow. Lakes are inland, flat (or sometimes basin-shaped) bodies of water with relatively calm or slow-flowing water. Rivers, on the other hand, are elongated inland bodies of water with faster-flowing water. Seas are the marginal parts of the ocean, forming extensive bodies of water that are relatively still or have slow water movement.

Regarding water quality and intrinsic differences, river and lake water are freshwater, with lower concentrations than seawater, which is saline. The flora and fauna in rivers and lakes cannot survive in seawater, and vice versa.

Regarding their sources, rivers typically originate from higher elevations, gathering from springs to form streams that converge into waterways. Lakes, on the other hand, are larger water basins, often formed by the accumulation of rainwater in natural depressions.

On maps, lakes appear as enclosed bodies of water, typically collecting rainfall runoff to form vast reservoirs. Seas are large bodies of water generally associated with national boundaries and often adjacent to continental shelves, serving as the convergence point for many rivers.

Regarding the color of rivers, lakes, and seawater, seawater's primary mineral is NaCl ions, and its depth tends to be more significant than the other two, hence its blue coloration.

Seawater is indeed a liquid mineral resource. Every cubic kilometer of seawater contains 35.7 million tons of minerals. Of the over 100 known elements, 80% can be found in seawater.

However, river water, usually originating from streams, generally flows with significant surface contact with air, resulting in higher oxygen levels and a relatively straightforward, light-green appearance.

Lake water, confined within a particular area, experiences less flow compared to the other two types, making it susceptible to the proliferation of algae and other aquatic plants, giving it a deep green color.

Human activity is the primary source of water pollution, including industrial effluents, domestic sewage, pesticides, and fertilizers. A significant portion of current water pollution is due to insufficient environmental awareness among residents. Therefore, relevant departments should conduct awareness campaigns to popularize environmental knowledge and raise people's awareness and understanding.