Aloha All: As part of my graduate work, I am writing a review paper on marks left in ocean sediment by marine mammal activities (demonstrated or hypothesized), such as foraging.  This could be cetaceans, pinnipeds, or sirenians.  The marks usually are long pursuit tracks, round pockmarks, or troughs, but may be other shapes, as well. The literature is pretty scarce.  I have a few previous articles, but I am looking for anything else that might be out there.  If anyone is willing to share information of any sort, whether published, manuscript, or anecdotal, please send it, in .pdf format if possible, to Lora Reeve at lreeve@hawaii.edu Mahalo nui! Lora Lora L Nordtvedt Reeve, MBA Wm. S. Richardson School of Law and Department of Zoology University of Hawai`i at Mānoa 2538 McCarthy Mall, Edmonson 152 Honolulu, HI 96822