Definitions of Oceanic:

• noun:   an eastern subfamily of Malayo-Polynesian languages
• adjective:   constituting or living in the open sea

  Example: "Oceanic waters"

• adjective:   resembling the ocean in apparent limitlessness in extent or degree

  Example: "The oceanic violence of his rage"

• adjective:   relating to or occurring or living in or frequenting the open ocean

  Example: "Oceanic islands like Bermuda"