New research has uncovered a crucial clue to understanding the spread of "barrens" in the Great Southern Reef, which are ...

For years the sea urchin's key predator was believed to be lobsters due to the crustacean's appendages being able to manipulate the spiky urchins to get inside. However the discovery that sharks ...

Courtesy of Noma Sloan displays a sea urchin he plucked from the sandy seafloor ... overfishing the animal’s natural predators and large-scale change in ocean circulation—believed to be ...

Predators can increase diversity in communities ... Likewise, in Alaska, sea otter decline has led to an increase in sea urchin abundance and a loss of kelp forest, and this decline has been ...

The sea urchin (ikiriya in Sinhala) is a spiny, hard-shelled creature that lives on the rocky seafloor, usually in shallow waters. The globular marine invertebrate has long sharp spines all over its ...