The battle of the atlantic was the longest running battle of WW2 while the battles in the pacific were spread over a wider area and were made up by short violent actions. The conflict in the atlantic was along the trade routes between the eastern seaboard of north america + the carribean to northern europe so the naval actions that happened there kind of blended together into one long conflict

There weren't so many set-piece battles between warships like Midway or Coral Sea or Leyte Gulf, simply because the German surface fleet was not in a position to fight one. The Kriegsmarine had never been strong compared to the British and French navies and was further mauled in the Norway campaign.