Without the algae, the coral can’t get any nutrients. The Great Barrier Reef Marine Park Authority has started the second phase of its survey to assess the impact of 2016’s bleaching.

Without this algae, the coral can't get the nutrients ... Narrator: In 2016 and 2017, the Great Barrier Reef was hit with a massive marine heat wave, leading to the longest coral-bleaching events ...

3D view of Halimeda bioherms, Great Barrier Reef. Credit: Robin Beaman "Inside ... sponges—and flora—green calcareous algae, the Halimeda, red calcareous algae, various types of macro algae ...

The U.N. recognizes the Great Barrier Reef as a World Heritage Site for its staggering amount of marine biodiversity. In addition to the tiny life forms the reefs nurture, from algae to mollusks ...

the algae emit poisons. The corals then reject their symbiotic partners and succumb to disease and death. This occurred across a vast section of the northern Great Barrier Reef last year.

The Great Barrier Reef Marine Park Authority ... in which corals lose their color after expelling the one-celled algae that live within their tissues. This is a sign of stress, and it can kill ...

When the algae leaves, the coral is left without its main source of food and it turns white. The Great Barrier Reef is a Unesco-listed World Heritage site due to its "enormous scientific and ...

When these conditions arise, the symbiotic algae living in coral tissue become ... to track how well corals in the Southern ...

It's a mutual relationship between algae and polyps, creating a kaleidoscope of colors. It's like a living canvas where sunshine and sea life intermingle. The Great Barrier Reef does more than jus ...

Often dubbed the world's largest living structure, the Great Barrier Reef is a 1,400-mile expanse ... rise and the coral expels microscopic algae, known as zooxanthellae, to survive.

Scientists believe summer algae blooms off the north Queensland ... which has devastated part of the Great Barrier Reef. Benjamin Mos, a marine scientist at the University of Queensland, said ...

the Great Barrier Reef shelters and sustains everything from algae, worms, and snails to fish, turtles, and sharks. Tropical fish swim along the edges of a coral reef off Great Keppel Island ...