This image is a derivative work of the following images: File:Cetacean_sex.JPG licensed with Cc-by-sa-3.0-migrated, GFDL 2007-06-20T17:35:58Z Tursiops 330x360...
legambientearcipelagotoscano.it (for the authorization see here) Derivative works of this file: Sexe dels cetacis.JPG English determination method or standard: SHA-1...
