Table 3. Indicators of the nasal morphology analyzed in this study.

Species	ID	Distance from naris to choanae: head length	Diameter of nasopharyngeal duct: head length	Volume of cavum nasi proprium: head length	Volume of olfactory region: volume of cavum nasi proprium
Hawksbill	H-1	0.30	0.042	0.082	0.32
	H-2	0.32	0.048	0.053	0.26
Olive ridley	O-1	0.34	0.048	0.085	0.35
	O-2	0.37	0.044	0.075	0.28
	O-3	0.37	0.053	0.135	0.24
Black	B-1	0.35	0.043	0.109	0.36
	B-2	0.32	0.051	0.043	0.28
	B-3	0.31	0.044	0.042	0.28
Green	Cm-1†	0.30	0.030	0.036	0.31
	Cm-2‡	0.32	0.037	0.072	0.29
Loggerhead	Cc-1‡	0.33	0.041	ND	ND
	Cc-2‡	0.29	0.032	ND	ND
Leatherback	Dc-1‡	0.24	0.058	ND	ND
	Dc-2‡	0.20	0.062	0.246	0.28
	Dc-3‡	0.21	0.059	ND	ND

ND, Not determined.

^†An individual reported in [10].

^‡Individuals reported in [13].