Dear colleagues, My name is Lena Gladilina. I'm a PhD student from Ukraine. During my field work in the Crimean coastal waters (the Black sea) I observed a bottlenose dolphin with a humpback near the dorsal fin. It was a juvenile or adult dolphin swimming alone. Please look at the pictures. Do you have any idea what could cause this deformation? Is it spondylosis deformans or tumor, or anything else? There is a link to the photos: http://imageshack.us/a/img829/7171/20120806nsmotorboategl0.jpg http://imageshack.us/a/img831/7171/20120806nsmotorboategl0.jpg http://imageshack.us/a/img132/7171/20120806nsmotorboategl0.jpg http://imageshack.us/a/img713/7171/20120806nsmotorboategl0.jpg Thank you for your help in advance. Best regards, Lena -- Lena Gladilina, Department of Zoology, V.I. Vernadsky Taurida National University, Simferopol, Ukraine