This pinniped uses its tusks to dig mollusks from the ocean floor
[DOC] [TLE] Polar Seas [PAR] Pinnipeds (seals, sea lions, walrus); Polar bears; No penguins ... walruses are 
found only in the North Polar regions; Use their tusks to hoist them onto ice & dig 
for clams ... Krill; Crustaceans; Mollusks; Fish; Squids; Leopard seals eat 
penguins ... Thermohaline currents are found on the ocean floor - thermo= 
temperature... [DOC] [TLE] Walruses feeding - ARKive [PAR] ... the walrus (Odobenus rosmarus) is renowned for its enormous tusks, which 
can .... By far the greatest proportion of its diet is comprised of bivalve molluscs 
such as ...