Nearctic: The Sharp-tailed Snake (Contia tenuis) is a North American species generally found in the Sierra Nevada Mountain Range from southern California to southern British Columbia and along the Pacific Coast of California. In California, this species can be found in and along the mountains from Eureka to central San Luis Obispo, and along western slope of the Sierras in the foothills and at middle to low elevations (max altitude 2130 m (7000 ft.).
Harp seals migrate in large groups as much as five thousand miles (8,000 km) from feeding grounds in the north to breeding grounds in the south.
They spend about half the year in the north, feeding on fish and invertebrates.
In the spring, thousands of females congregate on pack ice to give birth and nurse their white-furred pups.
Following weaning, the pups shed their white fur, which is replaced by silver-gray pelage with dark spots. After successive molts, the spots are replaced by the typical harp-shaped marking on the back.
By June the harp seals are moving northward again...