Wladimir Klitschko, Hayden Panettiere -- Daddy's Having Fun, But Someone's in Trouble (PHOTOS)

Wladimir Klitschko may be the heavyweight champion of the world, but he's about to get his ass kicked by his 5' fiancee.

Wlad took baby Kaya out into the Miami beach surf, while Hayden Panettiere was doing 'GMA' in NYC.

It looks like fun and games, but we're guessing Hayden will have issues:

-- the baby doesn't have a life jacket

-- Wlad is clowning off balance in the surf, with Kaya in a precarious position

-- she's not wearing a hat in the Miami sun

That said, dad is no ordinary father at 6'6" and 246 lbs. Kaya's in good hands. Of course, Hayden might not see it that way.

Good luck Wlad ... we're rooting for you!.