Snow, a young harp seal, washed up on a frozen marsh in the Gulf of Maine last month, critically dehydrated and unable to return to the water. He was rescued by volunteers with the nonprofit group Marine Mammals of Maine, who brought the seal to the Marine Animal Rehabilitation Center at nearby University of New England. According to Shannon Prendiville, senior animal care technician at the center, Snow was the third of seven stranded seals to be brought in from the near-freezing water this winter. As Prendiville explained to LiveScience, rescued seals are allowed to stay at the rehabilitation center for as long as it takes to get them healthy enough to return to the wild. Then, they're sent back to the ocean equipped with ID tags (in case they wash ashore again), to rejoin their families in the wild.