Breath hold diving mammals.
D000222:Adaptation, Physiological; D000818:Animals; D010872:Caniformia / Q000502:physiology*; D004242:Diving; D006801:Humans; D000860:Hypoxia / Q000209:etiology; D007101:Immersion / Q000009:adverse effects*; D011659:Pulmonary Gas Exchange; D012119:Respiration; D046048:Seals, Earless / Q000502:physiology*; D013696:Temperature; D014474:Unconsciousness / Q000209:etiology; D014856:Walruses / Q000502:physiology*