Table 1.

Chemical composition of fish bone samples (dry) and comparison with seawater.

	Ca	P	Na	K	Mg	Sr	Mg/Ca	Sr/Ca
	%	%	‰	‰	‰	‰
Japanese amberjack	15.1	7.9	3.2	2.2	2.05	0.52	0.014	0.0034
Red stingray	17.9	10.3	11.2	4.0	3.69	0.70	0.021	0.0039
Yellow goosefish	13.2	7.4	17.7	5.9	2.27	1.14	0.017	0.0086
Seawater (Salinity =35)*	0.041		10.73	0.41	1.28	0.0079	0.31	0.0192

^*from Millero et al. (2008) [16]