Coyotes—familiar residents of West Marin trails and yards—have long dined on small game, garbage and the occasional toy dog. New research is revealing that they also enjoy another snack: baby harbor seals.

People think of coyotes as land animals, said Frankie Gerraty of the University of California, Santa Cruz, who is conducting doctoral research in the Point Reyes National Seashore and other coastal sites to better understand the relationship between the canines and pinnipeds.

“Coyotes…