Table 2.

Summary of morphometrics and blubber volume and mass estimates for beluga whales (Delphinapterus leucas) from Bristol Bay. Mass-specific blubber mass was calculated by dividing the mean blubber mass estimate from Method 2 by the body mass (M_B) estimate.

Season	Age class	Est. mass (kg)	Total length (m)	Blubber volume (m3)	Blubber mass Method 1 (kg)	Min. blubber mass Method 2 (kg)	Mean blubber mass Method 2 (kg)	Max. blubber mass Method 2 (kg)	Mass-specific blubber mass (kg blubber/kg MB)
Fall	Adult	1335	3.96	0.49	534	449	453	457	0.34
Fall	Adult	722	3.42	0.34	289	308	312	315	0.43
Fall	Adult	1105	3.96	0.53	442	483	487	492	0.44
Fall	Adult	1016	3.84	0.46	406	417	421	425	0.41
Fall	Adult	837	3.40	0.46	335	420	424	428	0.51
Fall	Adult	1169	4.14	0.50	467	460	464	469	0.40
Fall	Adult	875	3.56	0.35	350	314	317	321	0.36
Fall	Adult	1398	3.31	0.58	559	526	531	536	0.38
Fall	Adult	658	3.15	0.26	263	234	236	239	0.36
Fall	Adult	620	3.05	0.33	248	301	304	307	0.49
Fall	Juvenile	211	2.72	0.14	85	126	128	129	0.60
Fall	Juvenile	365	2.77	0.17	146	157	159	160	0.44
Spring	Adult	875	3.05	0.26	350	240	243	245	0.28
Spring	Adult	722	3.35	0.28	289	256	259	261	0.36
Spring	Adult	1156	4.12	0.40	462	364	368	372	0.32
Spring	Adult	620	3.20	0.24	248	223	225	227	0.36
Spring	Juvenile	454	3.07	0.23	182	208	210	212	0.46
Spring	Juvenile	301	2.54	0.15	120	137	138	139	0.46
Spring	Juvenile	365	3.12	0.20	146	186	188	190	0.51
Spring	Juvenile	454	2.95	0.18	182	164	165	167	0.36
Spring	Juvenile	262	2.79	0.16	105	145	146	148	0.56