![Scientists discover 500 metre-tall skyscraper coral reef at Australia's Great Barrier Reef | Great Barrier Reef | The Guardian Scientists discover 500 metre-tall skyscraper coral reef at Australia's Great Barrier Reef | Great Barrier Reef | The Guardian](https://i.guim.co.uk/img/media/9d41173fda61c467c0ab97a3e73cfe574580fa2d/55_0_1800_1080/master/1800.jpg?width=445&quality=45&auto=format&fit=max&dpr=2&s=61198951e2565e944e68d6e9820b0888)
Scientists discover 500 metre-tall skyscraper coral reef at Australia's Great Barrier Reef | Great Barrier Reef | The Guardian
![Algae overrun a dead coral reef, Curacao, Netherlands Antilles, Caribbean, Caribbean sea Stock Photo - Alamy Algae overrun a dead coral reef, Curacao, Netherlands Antilles, Caribbean, Caribbean sea Stock Photo - Alamy](https://c8.alamy.com/comp/M73212/algae-overrun-a-dead-coral-reef-curacao-netherlands-antilles-caribbean-M73212.jpg)
Algae overrun a dead coral reef, Curacao, Netherlands Antilles, Caribbean, Caribbean sea Stock Photo - Alamy
![IUCN's call for action on fast-deteriorating Great Barrier Reef backed, despite no danger listing | IUCN IUCN's call for action on fast-deteriorating Great Barrier Reef backed, despite no danger listing | IUCN](https://www.iucn.org/sites/dev/files/styles/850x500_no_menu_article/public/import/img/great_barrier_reef_celia_zwahlenlow.jpg?itok=Vm8Uya9R)
IUCN's call for action on fast-deteriorating Great Barrier Reef backed, despite no danger listing | IUCN
![Great Barrier Reef ❌ Ist das Riff in Australien tot? ❌ | Urlaubsguru | Great barrier reef, Barrier reef australia, Underwater world Great Barrier Reef ❌ Ist das Riff in Australien tot? ❌ | Urlaubsguru | Great barrier reef, Barrier reef australia, Underwater world](https://i.pinimg.com/originals/ef/9d/28/ef9d28b8353c62a72ea200e688b1014b.jpg)