Table 1. Daily and annual energetic requirements in kcal and number of Chinook salmon (based on a hypothetical 16,386 kcal salmon, [34]) for the current size of the southern resident killer whale (SRKW) population, considering various levels of asymptotic length and mass attained by killer whales in the population.

Body Length	Male		Female		Total Energy Requirement		Total Chinook Requirement
Scenario	Asymptotic		Asymptotic		kcal	kcal	“100%”	“100%”	“Summer”
(Source)	Length (cm)	Mass (kg)	Length (cm)	Mass (kg)	(×106) (per day)	(×109) (per year)	fish (per day)	fish ×103 (per year)	Fish ×103 (per year)
IWC NP Max	820	9655	780	8393	17.8	6.5	1088	397	98
IWC NP 99th	804	9137	742	7298	16.2	5.9	988	361	89
IWC NP 95th	770	8096	710	6451	14.4	5.3	880	321	79
IWC NP 80th	700	6199	630	4616	10.8	4.0	662	242	59
SeaWorld Max	685	5835	626	4534	10.5	3.8	639	233	57
SeaWorld 99th	678	5669	620	4413	10. 2	3.7	622	227	56
SeaWorld 95th	651	5059	598	3989	9.2	3.3	562	205	50
SeaWorld 80th	604	4102	560	3319	7.7	2.8	468	171	42

Our best estimate of body size in SRKW is based on the 80^th percentile of body lengths from the IWC catch records from the North Pacific, shown in bold. The “100%” scenario is hypothetical and illustrative: it naively converts caloric requirement to units of fish, assuming that the diet is composed entirely of Chinook salmon. The “Summer” scenario only estimates prey requirements from May–September, based on the proportion (83%) of the diet that is estimated to come from Chinook salmon in summer [17], [18]. Note that a ‘recovered’ population refers here to 155 animals in 2029 (one scenario calculated from the 2001 population of 81 animals with an estimated average annual growth of 2.3 percent over the succeeding 28 years, [31]). A recovered population will require at least 75% more energy than the values predicted here.