This pinniped uses its tusks to dig mollusks from the ocean floor
This 
pinniped uses its tusks to dig mollusks from the ocean floor... [DOC] [TLE] Pinniped - Wikipedia [PAR] Pinnipeds (/pnpdz/) (from Latin pinna "fin" and pes, pedis "foot"), 
commonly known as ... Otariids use their front limbs primarily to propel 
themselves through the water, while ... Walruses are specialized for feeding on 
bottom-dwelling mollusks.