The new coral reef, measuring 1,600 feet in height, is the first to be discovered in more than 120 years.
Scientists say the algae has "tumbleweed-like" growth and smothers entire reefs.
Scientists show that ecosystems can collapse remarkably quickly once they have reached a tipping point. A "regime shift" can take place over human timescales of years and decades
"We are beginning to transition and go through the extinction," study author David Gruber said. "Who comes out the other side is up for grabs."
A disease thought to be caused by a pathogen is ravaging stony coral reefs in Florida and the Caribbean.
"It is important for everyone to know that their actions on land impact their local reefs onshore: runoff from agriculture and sewage, particularly during storm events, compromise our reefs," an expert told Newsweek.
But today's threats are far more intense than those of the past.
This dynamic duo is another deadly threat to coral reefs. But people can do something about it.
The Dutch ship was carrying contraband when it sank.
New research shows corals can re-emit sunlight as a red-orange glow.