Arm Wrestling.

ECHINODERMATA; CHEMICAL oceanography; STARFISH physiology; REGENERATION (Biology); CARBON dioxide adsorption; CARBON dioxide & the environment; WOOD, Hannah L.; ANTHROPOGENIC effects on nature

The article examines information on how the lowered pH of oceanic waters affects the calcium-based skeletons of echinoderms. The author states that seawater is acidifying due to increasing levels of atmospheric carbon dioxide released by human beings, which is subsequently absorbed by the oceans. This phenomenon poses a threat to calcareous lifeforms by dissolving their shells and skeletons, and it has been assumed that the same is true for echinoderms. Also discussed is research conducted by Hannah L. Wood from England's Plymouth Marine Laboratory, which studies the effects of seawater acidity on a brittlestar's ability to regenerate arms.