Officials say the deck of a sports bar packed with basketball fans suddenly collapsed and plunged into the Biscayne Bay.
The incident happened when the deck of Shucker's Bar and Grill gave way.
Officials say dozens were pulled from the water last night by witnesses who ran to help and divers who rushed to the scene.
A total of 24 people were rushed to the hospital, two are in serious condition.
The incident happened as fans were jumping while watching the Miami Heat play the San Antonio Spurs during the NBA finals.