Trump made the comment during a speech at Naval Station Norfolk, next to the Harry S. Truman aircraft carrier. It was not immediately clear if he was referencing a strike announced Friday by US Defence Secretary Pete Hegseth.
That strike, at least the fourth such attack in recent weeks, killed four people.
"In recent weeks, the navy has supported our mission to blow the cartel terrorists the hell out of the water ... we did another one last night. Now we just can't find any," Trump said.
"They're not coming in by sea anymore, so now we'll have to start looking about the land because they'll be forced to go by land."
Venezuela's communications ministry did not immediately respond to a request for comment, but President Nicolas Maduro published a video message on Telegram shortly after Trump's announcement in which he blasted US aggression against Venezuela.
"Our people have never and will never be afraid to defend their right to live and be free," Maduro said, without referencing Trump's latest comments. "We will be ready to face any scenario."
Venezuelan Foreign Minister Yvan Gil said his Russian counterpart Sergei Lavrov gave a "full expression of support and solidarity" to Caracas in a phone call between the two.
On Saturday, Gil said Maduro had sent a letter to Pope Leo XIV in which he asked for his support to "consolidate peace in Venezuela."
Hegseth told Fox News in an interview that he has every authorisation needed for the Caribbean strikes.
