https://apnews.com/article/israel-tel-aviv-university-mediterranean-sea-urchins-coral-reefs-204cffe0a90940ecc37ab05938ea831e

JERUSALEM (AP) — Sea urchins in Israel's Gulf of Eilat have been dying off at an alarming rate, researchers announced Wednesday — a development that threatens the Red Sea’s prized coral reef ecosystems.

According to Tel Aviv University scientists, an unknown pathogen is killing off the black sea urchin, Diadema setosum. The massive die-off first began in the eastern Mediterranean Sea, from where it has spread to the neighboring Red Sea, the scientists said.