What is that movie called where they go to mexico to celebrate this guy's birthday that is a captain of the boat and there's this girl that is scared of the water and she has a little baby and then they all get in the water and they forgot to put the ladder down and they stay in water trying to get back up in the boat ?

Open Water 2: Adrift (http://en.wikipedia.org/wiki/Open_Water_2:_Adrift)