cardio respiratory biology

3. Cardio-Respiratory Biology

Marine mammals such as porpoises and dolpins, seals, whales, etc. can breathe-hold and dive deep into the ocean in search of prey. When a human wants to swim under water, he/she typically takes several deep breathes and then fills the lungs with air before taking the underwater swim. By contrast, a seal will forcefully expel air from its lungs prior to the diving episode. Why do they do this? Hint: it has to do with “the bends”

1-2 pages

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Each essay must include all sources accessed with proper citations and a separate bibliography page

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