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Swimming, Diving and Echolocation

Swimming, Diving and Echolocation. Swimming. Streamlined bodies. Breathing. Quick breaths Can empty and re-fill lungs in 2 seconds!!! Renew ~90% of air in single breath Humans ~10%. Diving Physiology. More blood than non-diving mammals More hemoglobin More myoglobin. Dive Reflex.

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Swimming, Diving and Echolocation

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  1. Swimming, Diving and Echolocation

  2. Swimming • Streamlined bodies

  3. Breathing • Quick breaths • Can empty and re-fill lungs in 2 seconds!!! • Renew ~90% of air in single breath • Humans ~10%

  4. Diving Physiology • More blood than non-diving mammals • More hemoglobin • More myoglobin

  5. Dive Reflex • Heart rate slows • Bradycardia • Blood flow reduced • Vasoconstriction • Increase in lactic acid

  6. Dive Reflex • Collapsible thoracic cavities

  7. The Bends • Decompression Sickness • N2

  8. Echolocation • 1500 m/sec • Object is 3 sec away • 4500 m away

  9. Spermaceti Organ

  10. Essex

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