Table 3. Models for the total number of unhealed bites on all whale species, including differences in the QAICc scores (ΔQAICc) and Akaike weights.

Species		Covariates	ΔQAICc		Weight
	Model 1	Reproductive class + Depth interval + Day	0.00		0.546
Sei	Model 2	Reproductive class + Depth interval + Length + Day	2.06		0.195
	Model 3	Reproductive class + Day	2.10		0.191
	Model 4	Reproductive class + Length	4.18		0.068
	Model 1	Depth interval + Length	0.00		0.298
Fin	Model 2	Depth interval + Length + Day	0.64		0.216
	Model 3	Length + Day	2.27		0.096
	Model 4	Depth + Length + Sex	2.49		0.086
	Model 1	Day + Length + Sex	0.00		0.460
Offshore	Model 2	Day + Length	1.50		0.217
Bryde’s	Model 3	Day + Length + Depth interval	2.86		0.110
	Model 4	Day + Length + Sex + Depth interval	3.30		0.088
		Option a	A	B	A	B
	Model 1	Day + Social grouping + Depth interval	0.00	0.00	0.574	0.855
Sperm	Model 2	Day + Social grouping	1.05	3.89	0.339	0.122
	Model 3	Day + Depth interval	4.50	7.44	0.061	0.021
	Model 4	Day	6.14	12.71	0.027	0.001

^a Option A assumes that missing data imply no recent scars. Option B assumes that missing data imply no observations were made (S2 Text).