A mass die-off of the sea urchins that help keep algae in check on coral reefs is threatening the Red Sea ecosystem, marine biologists in Israel warn — MENAHEM KAHANA The Red Sea's spectacular coral ...

A mysterious epidemic that began in the Mediterranean at the start of the year looks set to wipe out all of the Mediterranean and Red Sea’s urchins, and possibly their coral reefs too. When you ...

When Mya Breitbart heard that something was killing off sea urchins en masse, she thought: Oh no, not again. The long-spined sea urchin—a fist-size ball of black defensive spines—is a crucial and ...

The sustained loss of a once abundant species of sea urchin in the Caribbean could also result in the functional extinction of diverse coral species from the region's reefs, according to new research.

Since last year, long-spined sea urchins in the Caribbean Sea have been dropping dead with no known cause. Now, scientists may finally have found the culprit. The species, called Diadema antillarum, ...

A team of scientists say they’ve figured out the cause of a devastating sea urchin die-off that occurred last year along the waters of the Caribbean Islands and Florida. The algae-eating sea urchins ...

A team of researchers has identified a single-celled organism called a ciliate as the cause of a massive die-off event to a marine animal vital to coral reef health. The search for the 2022 killer ...

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