Coral reefs may lose almost all habitats by 2020: study

The video discusses the impact of acidity and climate change on coral reefs, leading to coral bleaching and the ejection of symbiotic algae. A study presented to the American Geophysicists Union predicts that nearly all coral reef habitats will be lost by 2100, with 70% to 90% disappearing in the next 20 years. Efforts to regrow bleached corals are unlikely to succeed long-term. Some areas like Baja California and the Red Sea may remain viable for coral growth, but are not ideal due to proximity to rivers. Climate warming and rising acidity are the main causes of coral habitat decline, with plastic pollution exacerbating the issue.

What does the study presented to the American Geophysicists Union say about coral reefs?

What percentage of coral reefs are scientists expecting to disappear in the next 20 years?

What challenges do researchers face in regrowing bleached corals?

Which locations are identified as some of the last viable sites for growing reefs?

What are the main culprits for the shrinking of coral habitats according to researchers?