Michael Phelps takes baby Boomer for swim

— -- Michael Phelps will be the biggest star in the water next month in Rio, but he was overshadowed by his young son on social media Wednesday.

Boomer Phelps was born on May 5, but he's already in the pool. Surely the Olympics are in his future -- perhaps as soon as 2032?

Boomer already has his own Instagram account, too. This is one savvy baby!