Sharks host bacteria, but what are they?

Backed by Nash Yielding, Jessie Campbell, Heather Giordanella, Regina Storo, Robert Diecidue, Dawn Roe-Clermont, William, Carol Goulette, Taryn Jesse Buelteman, Bram V. Lutton, and 24 other backersYvonne Slaninka, Laurie Kondylis, Michelle, Lester Ward, Michael W Turner, Katelyn Ludington, Craig Dooley, Erin Magee, Valerie, Jody Hobbs, Kathleen Matisak, Heath Adkins, Sharla Hardy, James Piechowski, Caitlin Banigan, Fred Hapgood, Kate Ray, Peter Bailey, Kasper Møller Andersen, Elizabeth Holz, Cindy Wu, Christina Tran, Pureum Kim, and Eric D. Walters