What phenomenon can lead to coral bleaching?

Coral bleaching is primarily caused by warming ocean temperatures that result from the increased concentration of greenhouse gases in the atmosphere. When ocean temperatures rise, corals expel the symbiotic algae known as zooxanthellae that live within their tissues. These algae are crucial for coral health and provide them with essential nutrients through photosynthesis, as well as their vibrant colors. Without these algae, corals lose their color and are at a greater risk of mortality due to reduced energy intake. This phenomenon highlights the sensitive nature of coral ecosystems to climate variations and emphasizes the impact of global warming on marine life. The relationship between rising temperatures and coral health underscores the importance of monitoring climate change as a significant threat to coral reefs worldwide.