"Brittle Star City" Found on Antarctic Seamount

A teeming horde of brittle stars has been discovered atop an undersea mountain chain near Antarctica, challenging long-held assumptions about the ecological role of such submerged peaks, known as seamounts.

The find, nicknamed "Brittle Star City," was made by a team surveying waters near the Macquarie Ridge, 870 miles (1,400 kilometers) south of New Zealand, as part of the Census of Marine Life, a ten-year scientific study of life in the oceans.

Voyage leader Ashley Rowden said the researchers were amazed as images from towed cameras revealed tens of millions of brittle stars—invertebrates related to starfish and sea urchins—feeding in the fierce currents that swirl around Antarctica...