AUTHOR=Fernández-Vilert Robert , Arranz Vanessa , Martín-Huete Marta , Hernández José Carlos , González-Delgado Sara , Pérez-Portela Rocío TITLE=Effect of ocean acidification on the oxygen consumption of the sea urchins Paracentrotus lividus (Lamarck, 1816) and Arbacia lixula (Linnaeus, 1758) living in CO2 natural gradients JOURNAL=Frontiers in Marine Science VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2025.1500646 DOI=10.3389/fmars.2025.1500646 ISSN=2296-7745