Fig. 1. Developmental changes in (A) hematocrit, (B) hemoglobin content and (C) mean corpuscular hemoglobin content as a function of body size in California sea lions from 5-month old pups to adults (5-month pups, N=13; 9-month pups, N=7; small juvenile, N=18; large juvenile, N=12; sub-adult male, N=15; adult male, N=22; 87 kg adult female, N=37). For all animals combined the relationship between body size and Hct was not significant (r²=0.01, P=0.413), whereas there was a significant linear relationship with Hb (r²=0.14, P<0.001) and MCHC (r²=0.06, P=0.009).