Global warming caused a rapid die-off of corals on our ocean reefs and toka (lagoon coral heads). As temperatures rose the corals expelled the symbiotic zooxanthellae, leaving bleached calcium carbonate. Corals lose the photosynthetic food supplies and are only left with filter feeding.
This was a direct result of global warming. Our lagoon water temperature exceeded 38 Celsius in 2016: deeper corals suffered most as they are used to cooler water than the shallower corals are. Photos are from different depths at the start of the bleaching event ~ a few weeks later just about all corals and clams were dead or dying. Terrible!
Please see our Downloads page for the PDF TMB6-Too Hot in Paradise! Kindly published by The Marine Biologist in April 2016. Metaki Poria!