Table 1.

PolyP and total P weight fraction in marine sponges (n = 3 for each sample)

Sponge sample	PolyP ± SD, % dry weight	Total P ± SD, % dry weight	PolyP/total P, %
X. muta
Epidermal layer	0.080 ± 0.010	0.325 ± 0.042	24.6
Mesohyl layer	0.075 ± 0.011	0.298 ± 0.034	25.2
I. strobilina	0.092 ± 0.012	0.342 ± 0.116	26.9
Whole sponge
M. laxissima	0.126 ± 0.015	0.314 ± 0.038	40.1
Whole sponge