Gisele Bundchen hit Costa Rican waters on Thursday for a little morning of surfing ... and she looked goooood -- both on the board, and off of it!
Tom Brady's ex didn't stay in the ocean long -- getting in only about 40 minutes of wave-riding -- but check out the photos from her gnar-shredding sesh ... she sure seemed to make it all count.
Bundchen got up on her ride several times ... cruising into shore with some serious pace over and over again.
She impressed while away from the board as well .