The fossilized spines of sea urchins were found in over 1,400 sediment samples from boreholes in the Pacific, Southern Ocean, and Atlantic, between 200 and 4,700 meters (656 and 15,420 feet).

One of the creepiest, crawliest creatures of the Earth may have been swimming before adapting to live on land, new research suggests.

Fossil spines reveal deep sea's past Early occurrence of irregular sea urchins in the depths of the oceans Date: September 5, 2023 Source: University of Göttingen ...

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.