Marine water covers more than 70% of Earth's surface. Several natural products, mainly secondary metabolites from marine invertebrates, such as sponges, corals, etc., have shown diverse biological activities. The Ocean has been referred to as 'Ratnakar', by the world's oldest and most revered holy texts, the Vedas, which means the bestower of immense riches. Most of the marine invertebrates, synthesizing secondary metabolites, thrive in or, near coral reefs. Global warming has led to rising of ocean warming and acidification, which is also responsible for the stressful conditions, in which coral polyps expel their symbiotic algal partner, Zooxanthellae, which leads to bleaching of the coral colony. This act, not only devoids the corals of their attractive colors, starving them of nutrients in absence of the support of their photosynthetic partner, but this bleached state, exposes the calcium carbonate skeleton, to get easily destroyed/ dissolved in the rising acid levels, due to higher carbon dioxide levels. Recently, some heartening attempts have been reported to made regarding creating / seeding artificial coral reefs, which if successful, may grow up to harbour most of the marine biodiversity. Such detrimental impacts of climate change, along with potential solutions will be dealt with.

Keywords: Global warming, Carbon dioxide, Ocean acidification, Marine Invertebrates, Coral bleaching, Ocean Coral polyps, Zooxanthellae, artificial coral reefs