Absence of Oxygen
This page is the CodyCross answer for the clue below from All Things Water, Group 1291, Puzzle 1 (Dolphin Pods).
Question is: Absence of Oxygen
and the answer is: ANOXIA
Word Meaning:
ANOXIA — (pathology) A condition in which a body tissue or an environment is severely or totally deprived of oxygen; severe hypoxia.
Definitions from Wiktionary.