Tom Brady is on dad time right now -- taking his kids out to sea ... just a few days after their mom, Gisele, flew 'em out to Central America with that jiu-jitsu guy she's always with.
The retired NFL quarterback posted a bunch of photos of him and little ones Sunday, where they're on a boat and diving into the ocean with snorkeling gear on. He captioned his post, I did Michigan and Massachusetts winters for a long time. Let me have this."
The pics he threw up are super cute .