DuckCorp Dico

Found one definition

1.                 From English - Polish Piotrowski+Saloni/FreeDict dictionary ver. 0.2:
                   
   
   
                   
                     
   sea /si:/ <N>
    1.  morze
    2.  at sea (:at :sea)
    - na morzu, w morzu
    3.  [nieform]  be (all) at sea (be V: :all :at :sea)
    - być w lesie, nie wiedzieć, co robić
    4.  by sea (:by :sea)
    - morzem
    5.  by the sea (:by :the :sea)
    - nad morzem
    6.  out to sea (:out :to :sea)
    - na morze