Table 2. Allometric scaling equations for organisms in this study.

Species	Dependent variable	Independent variable	a	s.e.	b	s.e.	R 2	p-value	N
Xestospongia muta	Volume (m3)	Base diameter (m)	−0.35	0.02	3.05	0.04	0.95	< 2.2∗10−16	339
Xestospongia muta	Base diameter (m)	Height (m)	0.01	0.02	1.02	0.03	0.77	< 2.2∗10−16	339
Xestospongia muta	Osculum diameter (m)	Base diameter (m)	−0.01	0.01	0.68	0.02	0.81	< 2.2∗10−16	339
Xestospongia muta	Osculum diameter (m)	Height (m)	0.05	0.02	0.75	0.02	0.75	< 2.2∗10−16	341
Tridacna gigas	Cost (USD)	Length (cm)	1.30	0.21	2.32	0.12	0.79	< 2.2∗10−16	91
Tridacna gigas (onlines sales)	Width (cm)	Length (cm)	0.53	0.78	0.64	0.01	0.95	< 2.2∗10−16	101
Tridacna gigas (wild)	Width (cm)	Length (cm)	4.77	1.91	0.49	0.03	0.87	< 2.2∗10−16	39
Syrinx aruanus	Cost (USD)	Length (cm)	0.21	0.30	1.09	0.19	0.35	< 2.4e∗10−7	61
Enteroctopus dofleini	Mass (kg)	Interocular eye distance (m)	3.61	0.04	2.64	0.04	0.72	< 2.2∗10−16	1712
Architeuthis dux	Mass (kg)	Total length (m)	1.40	0.18	0.73	0.21	0.22	0.01	38
Architeuthis dux	Mass (kg)	Mantle length (m)	0.67	0.03	0.85	0.11	0.58	1.24∗10−9	43
Architeuthis dux	Total length (m)	Mantle length (m)	1.59	0.03	1.98	0.15	0.72	< 2.2∗10−16	64
Carcharodon carcharias	Mass (kg)	Total length (m)	0.99	0.04	3.00	0.06	0.95	< 2∗10−16	90
Hexanchus griseus	Mass (kg)	Total length (m)	0.67	0.06	3.33	0.17	0.92	< 2.2∗10−16	35
Mola mola	Mass (kg)	Total length (m)	1.82	0.02	3.19	0.07	0.94	< 2.2∗10−16	132
Mola mola	Mass (kg)	Dorsal to anal fin length (m)	1.24	0.04	2.55	0.23	0.58	< 2.2∗10−16	91
Mola mola	Total length (m)	Dorsal to anal fin length (m)	−0.13	0.01	1.03	0.03	0.89	< 2.2∗10−16	125
Dermochelys coriacea	Mass (kg)	Curved carapace length (m)	2.22	0.12	1.255	0.53	0.22	0.033	16