Harbor Seals (Phoca vitulina) live along the New England coast where they eat a variety of fish, shellfish, and other marine life. They often bask in small groups on rock ledges or sandbars, especially at low tide, and I've been pleasantly surprised a number of times to see the head of one pop into view while scanning for seabirds in a coastal harbor or off a sandy or rocky beach. Looking into their dark eyes always gives me pause.
Harbor Seals are more common and quite a bit smaller than the longer-nosed Gray Seals. One way to tell the two apart is by looking at their nostrils. Gray Seals have spaced out nostrils, whereas the nostrils of Harbor Seals are close together and form a v-shape. To learn more about Harbor Seals, visit Animal Diversity Web.