For the rod--give it a coat of cheap car wax, once at the start of the season, maybe another midway thru, and before you rack it for the winter. Spray the guide frames with WD-40 periodically---especially if they're Pac Bay guides
Rinse the reel in a gentle stream---a driving stream of water could wash salt into the innards. Some reels require more frequent TLC than others. If you have the mechanical skill, and the reel gets dunked a lot, you should do a complete tear-down, cleaning and re-lube monthly.