Since the 1960s, Hong Kong has developed rapidly. However, in order to solve the problem of population growth, Hong Kong needs to build a large number of infrastructure. Due to the lack of attention to the ecological environment, sewage and waste cannot be effectively treated, resulting in serious impacts on surrounding waters. At that time, the pearl farming industry declined due to environmental pollution.
Discharging different sewage or waste into the sea will have different consequences. Excessive nutrients in the water will occasionally induce red tides, leading to lack of oxygen in the sea, suffocation and death of aquatic organisms, damage to the ecology, and affect fisheries. The above statement is based on the premise of uncontrolled discharge of sewage. However, the current laws are more targeted at environmental protection than before, and marine organisms have a better living space.
Today, we are facing the crises of global warming and excessive waste. At the same time, marine fish farming has led to an excess of nutrients in the seawater, increasing the frequency of red tides.
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