12–20 breaths per minute
Definition. Respiratory rate (also known as ventilation rate, respiration rate, breathing rate, pulmonary ventilation rate, breathing frequency, and respiratory frequency or Rf) = the number of breaths a person takes during one minute. It is usually measured at rest, while sitting. Medical textbooks suggest that the normal respiratory rate for adults is only 12 breaths per minute at rest. Older textbooks often provide even smaller values (e.g., 8-10 breaths per minute). Breathing rate and heart rate are directly connected. This is because the heart is connected to the lungs via the pulmonary artery. I first thought that breathing rate would be half of the heart rate since half of the heart cycle occurs in the lungs. But I know that is not true with a normal 12 BPM(breaths per minute) breathing rate.  The respiration rate is the number of breaths a person takes per minute. The rate is usually measured when a person is at rest and simply involves counting the number of breaths for one minute by counting how many times the chest rises. The pulse rate is a measurement of the heart rate, or the number of times the heart beats per minute. As the heart pushes blood through the arteries, the arteries expand and contract with the flow of the blood. The respiration rate is the number of breaths a person takes per minute. The rate is usually measured when a person is at rest and simply involves counting the number of breaths for one minute by counting how many times the chest rises. Strength of the pulse. The normal pulse for healthy adults ranges from 60 to 100 beats per minute. The pulse rate may fluctuate and increase with exercise, illness, injury, and emotions. Females ages 12 and older, in general, tend to have faster heart rates than do males. Human respiration rate is measured when a person is at rest and involves counting the number of breaths for one minute by counting how many times the chest rises. An optical breath rate sensor can be used for monitoring patients during a magnetic resonance imaging scan. A normal respiratory rate is termed eupnea, an increased respiratory rate is termed tachypnea and a lower-than-normal respiratory rate is termed bradypnea. Breathing (which in organisms with lungs is called ventilation and includes inhalation and exhalation) is a part of respiration. In comparison to a human, a killer whale can hold its breath longer and exchange more lung air with each breath. 4.The resting respiratory rate of killer whales at SeaWorld is about three to seven breaths every five minutes. Respiration. A killer whale breathes through a single blowhole on top of its head. The blowhole is relaxed in a closed position. To open the blowhole, a killer whale contracts the muscular flap covering the blowhole. A whale holds its breath below water. The typical respiratory rate for a healthy adult at rest is 12–20 breaths per minute. Average resting respiratory rates by age are: 1  birth to 6 weeks: 30–60 breaths per minute. 2  6 months: 25–40 breaths per minute. A normal respiratory rate is termed eupnea, an increased respiratory rate is termed tachypnea and a lower-than-normal respiratory rate is termed bradypnea. Breathing (which in organisms with lungs is called ventilation and includes inhalation and exhalation) is a part of respiration. First, mean swimming speed (meters per second)and mean respiration rate (breaths per min) were used to calculate average breathsper meter for each track from killer whales, similar to methods used in gray whales Eschrichtius robustus (Sumich 1983). To better understandthe energetic cost of swimming in killer whales, total cost of transport (COT)wasestimated from swimming speeds and respiration rates from wild adult northernresident killer whales (Orcinus orca) and reported values of oxygen consumption incaptive whales.
http://www.normalbreathing.com/index-rate.php http://biology.stackexchange.com/questions/20703/what-is-the-ratio-of-breathing-rate-to-heart-rate http://www.hopkinsmedicine.org/healthlibrary/conditions/cardiovascular_diseases/vital_signs_body_temperature_pulse_rate_respiration_rate_blood_pressure_85,P00866/ http://www.urmc.rochester.edu/encyclopedia/content.aspx?ContentTypeID=85&ContentID=P00866 https://en.wikipedia.org/wiki/Respiratory_rate http://killerwhaleinfo.weebly.com/respiration.html https://en.wikipedia.org/wiki/Respiratory_rate http://www.oceansinitiative.org/wp-content/uploads/2010/11/williamsnoren2009_costoftransport.pdf
resting breathing rate of orca