Your 'skill' at picking has no bearing and you may win a maximum of 150 free games. You then pick bubbles for between 1 and 5 free games or 2 to 3 extra picks. The 'Ocean Magic Ultra Bonus' is triggered by landing 3, 4 or 5 bonus symbols for 5, 10 or 20 picks awarded respectively. All bubbles then move up one position in the current game.
In addition, during the reel spin of any game, the Big Whale may swim in front of the reels placing up to 20 additional bubbles on any position on the reels, excluding the top positions. Whenever an Ocean Magic symbol lands on a bubble, that position and all adjacent positions are transformed wild. You win in Ocean Magic Ultra by landing winning paylines and may play the game in 'Standard' and 'Bubble Boost' mode where during the reel spin of any game, between 1 to 20 bubbles may emanate from the conch below the reels and move on or below the reels, excluding the top positions. Ocean Magic Ultra is the 3rd in the series starting with the original Ocean Magic, Ocean Magic Grand and now this one which I feel is the best of the three! It's great that upon each iteration, substantial improvements are made!