The colors of the ocean vary from azure to turquoise and sometimes deep black. So why are some seas green and some blue?
First, we need to understand what determines the color of seawater. The color of seawater is mainly determined by factors such as the amount of plankton, minerals, and organic matter in the water, as well as the angle of sunlight. Among them, the type and quantity of plankton is one of the main factors affecting the color of seawater.
In the ocean, the distribution of species and abundance of plankton is uneven. In some seas, plankton are less abundant and green pigments are more abundant, so the color of these seas tends to be greener. Conversely, in other seas, where plankton is abundant and blue pigment is relatively low, the color of these seas tends to be more blue.
Second, the angle of sunlight also affects the color of the seawater. When sunlight hits the surface of the sea vertically, the light is absorbed and scattered by water molecules, giving the water its blue appearance. When sunlight shines obliquely, the light is reflected and refracted on the surface of the sea, giving the water a different color such as green or yellow.
In addition, the clarity and transparency of the seawater can also affect its color. Clear water will appear blue or green, while turbid water may appear yellow, brown, or gray. This is because turbid seawater contains more suspended particles and minerals that absorb and scatter light, changing the color of the seawater.
Factors such as plankton, mineral and organic matter content, sunlight angle, clarity and clarity of seawater can all affect the color of seawater. As a result, the color of the sea in different seas varies in color.