A lone coyote stunned biologists and others by swimming to Alcatraz Island earlier this year. Initially, biologists thought it swam from San Francisco, about a mile away. But DNA analysis revealed it came from Angel Island, twice the distance. The coyote’s journey impressed experts, highlighting its resilience. Camilla Fox from Project Coyote says the animal likely left its home in search of a mate or territory. Video of the coyote in the San Francisco Bay surfaced in January. Park officials planned to relocate it because of Alcatraz’s seabird habitat, but the coyote hasn’t been seen since.