Table 5. The accurate background information on 11 adult male grey seal individuals that were grouped according to the catching gear type and used to test the ability of the tissue chemical markers to indicate differences in feeding area or prey type.

Group	ID	Age (yrs)	Blubber depth (mm)	ICES area	Bycaught in	Target fish species
T	1588	16	33	30	trawl	herring
T	1613	28	42	30	trawl	herring
T	1610	10	60	30	trawl	herring
T	1629	19	45	30	trawl	herring
S	1606	7	48	32	surface fyke	salmonids, common whitefish
S	1593	10	30	32	surface fyke	salmonids, common whitefish
S	1553	15	21	32	surface fyke	salmonids
S	1526	15	27	32	surface fyke	salmonids
B	1574	17	36	32	bottom fyke	perch, pikeperch, cyprinids
B	1598	11	42	29/32*	bottom fyke	pikeperch
B	1624	10	42	32	bottom fyke	perch, pikeperch, cyprinids

Individual identity code (ID), age, blubber depth on sternum, ICES-area and the gear type (T = trawl, S = surface fyke, B = bottom fyke) where the seal individual was collected from, and the fish species targeted with the gear are presented.

* Individual 1598 was caught at the border of SD29 and 32.