Lumbar Vertebra 3 They were CA 189 (the female) and CA 188 (the young male), both transient orcas originally identified off the coast of California. In order to improve our services our company uses first-party and third-party cookies to offer users a more customised service, identify the session and allow analysis of the website. An orca's pectoral fin gets very big and very strong. Lumbar Vertebra 7 Body Structure of a Killer Whale: The fluke, also known as the caudal fin, is used by killer whales to move through the water. In the flickering, filtered sunlight of the sea, other animals may not recognize a killer whale as a potential predator. Go behind-the-scenes to see how our trainers care for and interact with these amazing animals, and get up close with some finned, flippered, or feathered friends. If that flipper can get you soaked imagine what that tail can do. Several years later, The Port Townsend Marine Science Center obtained permission from NOAA to complete the cleaning of the bones, assemble and display the skeleton of the female for use in its education and conservation programs. Constructing the body in this way teaches the user about the internal structure of marine mammals and how the organs work together, allowing an insight into this important species and evolution itself! The teeth of killer whales begin to erupt from several to 11 weeks of age, which corresponds with the time that calves are seen taking solid food from their mothers. var _gaq = _gaq || []; During January 2011, Robert Schlader and Nicholas Clement, research associates from the Idaho group, came to the Port Townsend Marine Science Center to produce the very first digital images of an orca skeleton ever made. Roll your cursor over the Whole Skeleton. Â, That bump is a fatty organ called the melon. Strong muscles along the caudal vertebrae and the chevrons beneath them control the movement of the 6-foot wide tail, used in swimming, diving and surfacing. Lumbar Vertebra 8 Some scientists think orcas cant hear a thing. The orca skull, like ours, holds the brain and main organs for seeing, hearing, smelling, and tasting. ( Log Out /  After hearing this orca's story, children in the Center's classes and summer camps named her HOPE. Change ), Because of the dark depths of the ocean, the killer whale uses echolocation (location of objects by the use sound reflection) but at times, the, The large gray area behind the dorsal fin is the, The white spot on each of the eyes is called the. Attached to the carpals are 5 digits, corresponding to our five fingers. They're immediately recognizable by their distinctive black-and-white coloring. Each is filled with special sound-transmitting fat that allows underwater sound to be carried to the ear bones in the skull. The pelvis of mammals like humans, dogs and horses serves as a point of attachment for the legs and spine. Like all other orcas, HOPE had almost no motion in her neck at all. Ears are small inconspicuous dimples just behind each eye, with no external flaps or pinnae. Analysis of HOPE's remains revealed that she had the highest concentrations of DDT and PCBs ever found in an orca. They have very distinct white patches, a slanted-back eye patch, and a faint saddle. Hear animal sounds for animals like anteaters, dolphins, frogs and more. © 2020 SeaWorld Parks & Entertainment, Inc. All Rights Reserved. This in turn connects to two bones, (radius and ulna) which correspond to the lower arm bones in humans. To learn more about details of the scanning process, visit http://ivl.imnh.isu.edu/Process.htm. %PDF-1.5 %���� Adult male killer whales are larger overall than their female counterpart including features such as pectoral flippers, dorsal fins, tail flukes, and girth. Killer whales have round heads and “beaks” and a straight mouth-line. Toothed whales have only one set of teeth; they are not replaced once lost. Like the human breastbone, HOPE's sternum, together with the sternal ribs, form a bony "cage" that help protects the heart, lungs and major blood vessels from injury. Since the melon has no bones, it doesn't appear in the scanned image of the boney skull. Just the slap of the flipper can send a lot of water flying. Notice the bump on the "forehead" of this photograph of an orca. Of the groups of killer whales studied, researchers have learned to recognize many individual killer whales from photographs, especially photos of the dorsal fin and saddle patch. Lumbar Vertebra 2 Warning! The teeth can pierce the skin of a marine mammal being attacked and also enable the orca to tear off pieces of meat. Download free teacher guides to keep students learning in a hands-on way: includes vocabulary, classroom activities, goals and objectives. In general, resident killer whales are larger and have a rounded tip on the dorsal fin, which is falcate (curved back) in adult females and tall and triangular in males. The Orca's circulatory system utilizes many arteries and veins in the flippers, flukes and dorsal fin that allow it to transfer heat from the body in warm conditions or conserve heat it as it swims in icy seas. The hyoid bones are attachment points for the orca's large muscular tongue. The dorsal fin of a male killer whale is proportionately larger than that of a female. The number of teeth varies among individuals. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; Students may have noticed that the materials in this unit use both the terms orca … Like the arteries of the flippers, the arteries of the flukes are surrounded by veins to help maintain body temperature. How to Use This Orca Bone Atlas. These are the smallest type of killer whale. A single blowhole on top of the head is covered by a muscular flap. The outer layer continually and rapidly renews itself, and the old skin sloughs off.

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