Columbia subject headings:
Aquatic animals--Physiology.
Asphyxia.
Deep diving--Physiological aspects.
Physiology, Comparative.
Harvard subject headings:
Aquatic animals--Physiology
Asphyxia.
Deep diving--Physiological aspects
Physiology, Comparative.
Princeton subject headings:
Aquatic animals--Physiology.
Asphyxia.
Deep diving--Physiological aspects.
Physiology, Comparative.