The walrus (Odobenus rosmarus) is a large flippered marine mammal with a discontinuous distribution about the North Pole in the Arctic Ocean and subarctic seas of the Northern Hemisphere. The walrus is the only living species in the family Odobenidae and genus Odobenus. This species is subdivided into three subspecies: the Atlantic walrus (O. r. rosmarus) which lives in the Atlantic Ocean, the Pacific walrus (O. r. divergens) which lives in the Pacific Ocean, and O. r. laptevi, which lives in the Laptev Sea of the Arctic Ocean.
Adult walruses are easily recognized by their prominent tusks, whiskers, and bulkiness. Adult males in the Pacific can weigh more than 2,000 kg (4,400 lb) and, among pinnipeds, are exceeded in size only by the two species of elephant seals. Walruses live mostly in shallow waters above the continental shelves, spending significant amounts of their lives on the sea ice looking for benthic bivalve mollusks to eat. Walruses are relatively long-lived, social animals, and they are considered to be a "keystone species" in the Arctic marine regions.
Walrus is a diesel locomotive currently on the Groudle Glen Railway. Walrus has a sister locomotive called Dolphin.
This locomotive was one of three built in 1952 by the Hunslet Engine Company for Robert Hudson (explaining the unusual manufacturers' title which appears prominently, cast into the locomotive's radiator frontage). It was built to run in a sand and gravel pit in Twickenham and did so until closure, after which the three were put up for sale. Along with works No. 4352 the locomotive was purchased by Doddington Park in Chipping Sodbury where a pleasure ground had been established. It was at this time that the locomotive acquired a "steam outline" structure. This consisted of a sheet metal half-cab with oval windows, false dome and chimney. The exhaust from the engine which had previously been directed beneath the frames was re-routed to be shot from this new chimney to give the appearance that the engine was "steaming" along. The locomotive was given the name "Doddington Dragon" at this time and heraldic crests added to the side panels. By 1980 the park was suffering losses and was closed, the locomotive, her sister, carriages and all trackwork were put up for sale.
In addition to the animal, Walrus may refer to: