Great Barrier Reef’s worst bleaching leaves giant coral graveyard: ‘It looks as if it has been carpet bombed’ – the Guardian

One Tree Island, Great Barrier Reef: the majority of corals have died and among the few survivors, many are now bleached. In the foreground are two small bleached Galaxea colonies and an unbleached Montipora - May 1, 2024 (by John Turnbull CC BY-NC-SA 2.0 DEED via Flickr).

Last month the Australian Institute of Marine Science and the Great Barrier Reef Marine Park Authority released a report warning that the reef was experiencing “the highest levels of thermal stress on record”. The authority’s chief scientist, Dr Roger Beeden, spoke of extensive and uniform bleaching across the southern reefs, which had dodged the worst of much of the previous four mass bleaching events to blight the Great Barrier Reef since 2016…

Corals are bleaching in every corner of the ocean, threatening its web of life – the Washington Post

Bleached plate corals and Sea Fans on Molasses Reef, Key Largo, Florida (by Matt Kieffer CC BY-SA 2.0 DEED via Flickr).

First around Fiji, then the Florida Keys, then Australia’s Great Barrier Reef, and now in the Indian Ocean. In the past year, anomalous ocean temperatures have left a trail of devastation for the world’s corals, bleaching entire reefs and threatening widespread coral mortality — and now, scientists with the National Oceanic and Atmospheric Administration and International Coral Reef Initiative say the world is experiencing its fourth global bleaching event, the second in the last decade…

The Widest-Ever Global Coral Crisis Will Hit Within Weeks, Scientists Say – the New York Times

Bleached corals at low tide, Heron Island, Australia, April 10, 2024 (by John Turnbull CC BY-NC-SA 2.0 DEED via Flickr).

The world’s coral reefs are in the throes of a global bleaching event caused by extraordinary ocean temperatures…It is the fourth such global event on record and is expected to affect more reefs than any other. Bleaching occurs when corals become so stressed that they lose the symbiotic algae they need to survive. Bleached corals can recover, but if the water surrounding them is too hot for too long, they die…

How to Crochet a Coral Reef – and Why – Scientific American

Evolution of a hyperbolic pseudosphere in crochet (by Cheryl, CC BY-SA 2.0 DEED via Flickr).

In 2005, Los Angeles-based twin sisters, Margaret and Christine Wertheim tried a different approach to communications by starting the Crochet Coral Reef project. The idea was born from their love of the Great Barrier Reef, their oceanic neighbor, and their appreciation for handiwork and the community it can create, simply by participation…

Coral, Crochet and Hyperbolic Geometry . . .

Crochet Coral Reef: TOXIC SEAS, Museum of Arts and Design, NYC 2016 (by Allison Meier CC BY 2.0 DEED via Flickr).

The long-running project, sometimes described as the environmental version of the AIDS quilt, thrives on convoluted math and a sea of volunteers….To date, nearly 25,000 crocheters (“reefers”) have created a worldwide archipelago of more than 50 reefs — both a paean to and a plea for these ecosystems, rainforests of the sea, which are threatened by climate change. The project also explores mathematical themes, since many living reef organisms biologically approximate the quirky curvature of hyperbolic geometry…