Dear colleagues, We are pleased to announce the publication of our new article on the comparative anatomy of the nasal cavity of common and striped dolphins and the long-finned pilot whale during pre- and postnatal development. García de los Ríos y Loshuertos A, Soler Laguía M, Arencibia Espinosa A, López Fernández A, Covelo Figueiredo P, Martínez Gomariz F, Sánchez Collado C, García Carrillo N, Ramírez Zarzosa G. Comparative Anatomy of the Nasal Cavity in the Common Dolphin *Delphinus delphis* L., Striped Dolphin *Stenella coeruleoalba* M. and Pilot Whale *Globicephala melas* T.: A Developmental Study. Animals 2021, 11(2):441. https://doi.org/10.3390/ani11020441 The developmental anatomy of the dolphin head has been studied mostly in single fetuses and few works have been made using a wide range of specimens. In this study, fetal specimens are the main subjects, but newborn, juvenile and adult specimens were also used. Our study analyzes the external nose and nasal cavities during pre- and postnatal development. The nose and nasal cavities were studied using a high-resolution endoscopy to analyze changes in the mucosa of fetal specimens, newborns and juveniles. Magnetic Resonance Imaging (MRI) was also used in fetuses to locate and identify significant structures. Computed Tomography (CT) allowed us to understand the development of the facial bones and the nasal cavity. The histological samples were compared with a horse, a terrestrial mammal with a complex nasal anatomy. Dissections and anatomical sections in two spatial planes were compared with MRI and CT studies. Endoscopy of the external nose showed interesting morphological changes as only two different diverticula (air sacs) were observed in the vestibular part and one recess in the respiratory and olfactory part. We conclude that nasal cavity development of the striped and common dolphins and the pilot whale is simpler than in the bottlenose dolphin and the melon is part of the nose both anatomically and functionally. Best regards, The scientific team <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Libre de virus. www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>