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• The article discusses the effects of climate change on coral reefs and their role in marine ecosystems.
• Coral bleaching is a major threat to coral reef health due to rising ocean temperatures, leading to increased ocean acidity and reduced oxygen levels.
• Other threats include overfishing, pollution, and destructive fishing practices which can all lead to the destruction of coral reefs.

Climate Change Impact on Coral Reefs

Coral reefs are an important part of marine ecosystems and are threatened by a changing climate. Rising ocean temperatures are causing coral bleaching, which is one of the biggest threats to coral reef health. Bleaching occurs when there is an increase in ocean temperatures, leading to an increase in acidity levels and reduced oxygen levels. This causes the corals’ symbiotic algae to be expelled from their tissue resulting in a decrease in growth rate or death for the coral polyp.


In addition to environmental changes caused by climate change, overfishing is also a major threat to coral reefs. Overfishing can occur when too many fish are removed from an area, leaving fewer fish than needed for healthy populations. This can lead to decreased water quality due to reduced amounts of nutrients available for corals, as well as increased sedimentation from fishing boats that disrupts the delicate balance of life on reefs.

Pollution Impacts

Pollution is another major factor contributing to declining reef health. Pollutants such as fertilizers or industrial waste can increase nutrient concentrations in seawater, leading to algal blooms that block out sunlight essential for corals’ survival. In addition, these pollutants can also contain toxic chemicals that damage corals directly or indirectly through other species that feed on them or live near them.

Destructive Fishing Practices

Destructive fishing practices such as blast fishing (which uses explosives) or bottom trawling (which drags heavy nets across seafloors) have become more prevalent over recent years due to increased demand for seafood products worldwide. These practices cause direct destruction by killing organisms living on reefs as well as long-term damage by removing habitats needed for fish populations.


Coral reefs face many threats from human activities related to climate change, overfishing, pollution and destructive fishing practices that can all contribute towards their decline if not properly managed or addressed quickly enough with effective management strategies . It is therefore imperative that we take steps now towards conserving these fragile ecosystems before it is too late