Radiographs illustrating movement of the free-floating implants. (A) California sea lion CSL6039 with single implanted life history transmitter on day of surgery, the transmitter is located on the left side of the animal, close to the pelvis. (B) On day 43 post-surgery, the transmitter has moved cranial and to the right side of the abdomen of CSL6039. (C) Steller sea lion TJ22 on day 28 post-surgery. The transmitter is located forward and on the left abdominal side of the animal.
Horning et al. BMC Veterinary Research 2008 4:51 doi:10.1186/1746-6148-4-51