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Spin-leap performance by cetaceans is influenced by moment of inertia.
J Exp Biol
January 2024
Hopkins Marine Station of Stanford University, Pacific Grove, CA 93950, USA.
Cetaceans are capable of extraordinary locomotor behaviors in both water and air. Whales and dolphins can execute aerial leaps by swimming rapidly to the water surface to achieve an escape velocity. Previous research on spinner dolphins demonstrated the capability of leaping and completing multiple spins around their longitudinal axis with high angular velocities.
View Article and Find Full Text PDFQuantifying the Leaping Motion Using a Self-Propelled Bionic Robotic Dolphin Platform.
Biomimetics (Basel)
January 2023
State Key Laboratory for Turbulence and Complex Systems, Department of Advanced Manufacturing and Robotics, College of Engineering, Peking University, Beijing 100871, China.
Kinematic analysis of leaping motions can provide meaningful insights into unraveling the efficient and agile propulsive mechanisms in dolphin swimming. However, undisturbed kinematic examination of live dolphins has been very scarce due to the restriction of close-up biological observation with a motion capture system. The main objective of this study is to quantify the leaping motion of a self-propelled bionic robotic dolphin using a combined numerical and experimental method.
View Article and Find Full Text PDFA morphological analysis of the cervical spine of the dolphin.
J Craniovertebr Junction Spine
March 2021
Department of Anatomy, Mumbai Veterinary College, Mumbai, Maharashtra, India.
Article Synopsis
- The study analyzed the bone morphology of dolphin cervical vertebrae, comparing them to human vertebrae to assess functional adaptations.
- Significant adaptations were found in dolphins, such as the absence of the odontoid process and uniquely shaped vertebrae, which support their swimming and leaping abilities.
- Despite these differences, dolphin cervical spines still show similarities to mammalian structures, maintaining a design suitable for essential functions like neurovascular housing and muscle attachment.
Leaping dolphin sign: Pneumoperitoneum.
J Med Imaging Radiat Oncol
October 2018
Department of Radiology, Concord Repatriation General Hospital, Concord, New South Wales, Australia.
The leaping dolphin sign.
Abdom Radiol (NY)
February 2017
Department of Radiology, Mayo Clinic, 4500 San Pablo Road South, Jacksonville, FL, 32224, USA.
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