Australian scientists managing the Great Barrier Reef have lifted their emergency response to the highest level following the publication of video footage of damage caused by coral bleaching.
Authorities this month said that areas of the World Heritage site were experiencing the worst bleaching in 15 years, at least partially as a result of the current El Niño, one of the strongest in two decades.
Coral bleaching is a process by which coral expels living algae, causing it to calcify. Coral can only survive within a narrow band of ocean temperature.
Manta rays are more likely to gather together under either a new or a full moon, according to new research published Oct 3 in the open access journal PLOS ONE by Fabrice Jaine and colleagues at the University of Queensland.
LABOR is considering proposals to establish the world's largest marine protected area with 972,000 square kilometres of the Coral Sea to be given differing levels of environmental cover.
The Age believes the draft proposal for the tropical waters between the Great Barrier Reef and the edge of Australian territory will place about half the total region in ''no take'' reserves, stopping fishing.