More about Dolphin Echolocation. Sonar in Dolphins. An exploration of the sonar system of Tursiops truncatus. Dolphin Echolocation. How dolphins use sound by The Cardigan Bay Marine Wildlife Centre. This site includes a recording of dolphin clicks.
I also have shortness of breath hat I have had for about 4 months now coinciding with the back ache starting and digestion changes. ...I have been worried sick I have pancreatic cancer as my symptoms....
Pancreatic cancer symptoms can include: 1  Dark urine. 2  Pale stools or stools that float in the toilet. 3  Yellow skin and eyes (jaundice)  Pain in your upper abdomen or middle part of your 1  back. Nausea and vomiting.  Weakness or extreme 1  tiredness. Loss of appetite or feelings of fullness.  Weight loss for no known reason.