An important basic knowledge for people who want to do whale watching at Peninsula Valdes, is the location of the external respiratory orifices of whales, which show great adaptation of these marine mammals to their environment. The spiracles are on top of the head and back, these ducts have powerful muscles that close the holes and prevent the ingress of water into the lungs.
When whales exhale leave out two columns of moist air and steam particles with secretions from the airways and lungs. These columns or clouds rise, forming a "V" that can reach 15 feet.
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