Table 1:

Mean ± SD of standard metabolic rate (in litres of oxygen per minute) and mass-specific standard metabolic rate (in millilitres of oxygen per minute per kilogram), multiples of basal metabolic rate and the age, mass range and sample sizes for Australian fur seals, New Zealand fur seals and Australian sea lions

Species and sex	n	Age range (years)	Mass range (kg)	Total trials	SMR (l O2 min−1)	sSMR (ml O2 min−1 kg−1)	BMR multiple
Australian fur seal
Female	1	17.8–19.1	69–79	13	0.49 ± 0.06	6.63 ± 1.04	2.0
Male	1	15.1–17.1	175–242	16	1.05 ± 0.20	5.33 ± 1.18	2.1
New Zealand fur seal
Male	3	7.5–14.0	47–161	31	0.62 ± 0.18	6.42 ± 1.66	2.2
Australian sea lion
Female	5	5.1–26.4	44–76	68	0.47 ± 0.08	7.44 ± 1.16	2.1
Male	2	9.0–14.3	108–177	25	0.84 ± 0.13	5.94 ± 1.09	2.0

Abbreviations: BMR, basal metabolic rate; SMR, standard metabolic rate; sSMR, mass-specific standard metabolic rate.