These pink sea urchins have teeth that sharpen themselves

Sea urchins have five teeth, each held by a separate jaw in a circular arrangement at the center of their spiked, spherical bodies. Now, researchers reporting in the journal Matter on September 18 have discovered how the ...

Making biominerals: Nature's recipe is old, evolved more than once

In recent years, scientists have teased out many of the secrets of biomineralization, the process by which sea urchins grow spines, mollusks build their shells and corals make their skeletons, not to mention how mammals and ...

Stranger sea things turning up off Nova Scotia shores

Lloyd Bond has been diving the waters of Nova Scotia for the last 20 years, often coming across flatfish, lobster and sea urchins that typically populate cooler northern climates.

Fearless sea urchins stripping underwater forests

A new study led by The University of Western Australia and the Centre of Advanced Studies of Blanes in Spain has found that sea urchins' fear of predators plays a key role in the health of underwater forests, which are declining ...

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