He said that the navy fired water at fishermen who were sailing off the Sudaniya shore, north of the Gaza Strip, and forced them to return to the harbor on Sunday morning.
Meanwhile, Israeli naval boats also attacked another group of fishermen who were sailing off the city of Khan Younis, south of the Gaza Strip, causing damage to at least one boat and forcing the fishermen to return to the harbor.
No injuries were reported.
Israel allows fishermen to sail only three nautical miles into sea in the northern Gaza shores, which they say is not enough to catch fish, a vital source for their daily living.
Israeli navy harassment of Palestinian fishermen off Gaza is an almost daily occurrence aimed at discouraging them from proceeding with fishing, a vital source of income to thousands of Gaza families.