More than 950 species of sea urchins play a key role in reef ecosystems. As grazers, they naturally reduce algae cover and maintain the balance needed for coral to live in tropical waters.

This includes various groups of sea urchin, which by ste. advertisement. Sharks Go Absolutely Wild For Sea Urchins, ...

Long-spined sea urchins are a crucial species in their shallow tropical environments, since they eat and keep algae populations in check that might otherwise threaten the survival of coral reefs.

IT has long been known that certain littoral echinoids habitually cover the parts of their body that are exposed to light by fragments taken from their surroundings. Some have interpreted this as ...

The particular species of sea urchin affected is a well-known protector of coral reefs and the ... It seems to be heading east towards the tropical waters of the Coral Triangle that extends off ...

The long-spined sea urchins inhabit shallow tropical waters and feed on algae that would otherwise destroy a reef. They began to lose their spines within days of contracting an unknown disease and ...

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.

Sea urchin stings aren’t usually fatal, but they are dangerous. You should be aware of the symptoms and treatments so you can get professional help if you need it. Symptoms.

Israel Massive sea urchin die-off in Israeli gulf threatens nearby coral reefs, researchers say An unknown pathogen is killing black sea urchins near Israel, according to scientists at the Tel ...

A sea-borne pandemic that wiped out sea urchin populations in the Red Sea has spread and is taking out the species in parts of the Indian Ocean and could go global, scientists in Israel say.