Dear Colleagues, We are working on a project to pull together what we know about marine mammal tracking (tag and transmitter) devices as algal or invertebrate species dispersal vectors. We write to ask if you have observed marine invertebrates or algae attached to tracking devices attached to marine mammals, and, if so, if you have either (1) photographs, (2) biofouled devices that we could examine (and return to you) or (3) field notes related to this phenomena? Equally valuable would be any directions in which you might point us, including marine mammal colleagues you know who may have observations to share. Key data include (if possible) the tagged location/date and retrieval location/date. Many thanks for any observations, reports, or stories you may have heard, from anywhere in the world. Jan Hodder jhodder@uoregon.edu<mailto:jhodder@uoregon.edu> University of Oregon Oregon Institution of Marine Biology Charleston, Oregon James T. Carlton jcarlton@williams.edu<mailto:jcarlton@williams.edu> Ocean & Coastal Studies Program Williams College - Mystic Seaport Mystic Connecticut Jan Hodder Oregon Institute of Marine Biology University of Oregon PO Box 5389 Charleston OR 97420 541-297-0664 Packages: 63466 Boat Basin Drive