Dear MARMAM community, We are pleased to announce the publication of our identification catalogue: *Killer Whales of West Iceland. Photo-Identification Catalogue of North Atlantic Killer Whales Recorded along the Snæfellsnes Peninsula and in Breiðafjörður 2014 – 2017. Compiled by Marie-Thérèse Mrusczok.* The catalogue is accessible under the following link: http://orcaguardians.org/orca-id-catalogue/ The catalogue was published by Orca Guardians Iceland, an independent conservation nonprofit organization dedicated to the protection of orcas in Iceland and their habitat through non-invasive research and education. Find more information at: www.orcaguardians.org and www.facebook.com/orcaguardians In this publication, the first of two consecutive catalogue parts on the occurrence of killer whales photographed in the coastal waters of West Iceland from January 2014 to April 2017 is presented. An overall aim of our year-round identification work both from land and sea is to record as many individual killer whales as possible moving through the area, with as few knowledge gaps as possible, extending fieldwork over the longest achievable period of time. This will help identify potential critical habitat / important feeding grounds of the Icelandic orca population and provide crucial knowledge for conservation measures. Furthermore, collecting data (and an average of 40,000 photographs) in the same area throughout the year gives unique insights into migration patterns, social structure, and feeding habits of repeatedly documented individuals. The catalogue is thus used as a tool to aid in conservation work, for the long-term monitoring of the population, and as a reference document for ongoing and future research. Best wishes Marie Mrusczok President - Orca Guardians Iceland Website: www.orcaguardians.org E-Mail: info@orcaguardians.org