Loss of marine biodiversity.
As a consequence of the factors listed below that have an influence on marine ecosystems, the ocean is becoming increasingly vulnerable to marine life, resulting in a loss of marine biodiversity.
Overfishing, pollution, and other human activities have a direct influence on marine animals. It has an impact on their diversity, abundance, and dispersion, as well as nutrition, development, breeding, and interspecies relationships.
Species-specific behaviour patterns are influenced by rising temperatures. Others move to the poles or to new places in response to climate changes. Some corals, for example, have been shown to rapidly bleach and die when their symbiotic relationship with the unicellular algae that they shelter and feed on is disrupted.
Ocean acidification, which is produced by increased CO2 absorption, has a direct influence on marine species having calcareous skeletons or shells, such as phytoplankton, crabs, molluscs, and others.
Extreme climatic events, such as erosion and floods, destroy natural habitats. They disrupt marine life in coastal areas, particularly in specific coastal ecosystems like mangroves and seagrass beds, which are important breeding grounds and potential CO2 capture zones.
An illustration of how marine biodiversity is impacted
References:
https://ocean-climate.org/en/awareness/the-decline-of-marine-biodiversity/