Means and standard error of daily growth rates of Atlantic sea scallops, <i>Placopecten magellanicus</i> over an 8-week exposure to different CO₂ enrichment levels (low, medium, and high).

Shell height (mm) was measured from the umbo to the outer shell margin, dried tissue weight (DTW, g) and dried shell weight (DSW, g) were determined by rinsing, shucking the animal, and drying tissues and shells in an oven at 60°C until constant weight was achieved. The superscript numbers indicate significant differences in the measured values between each treatment level (p<0.05).