Bubbly Submarine

Bubbly Submarine is an Epic Treasure that was released alongside in the first half of The Living Deep Sea City update. A submarine appears at fixed intervals firing Submarine Bubble Jellies, which grant points when collected.

When using the treasure in a game mode that requires a relay cookie, such as in Trophy Race or Guild Run, the cookie not actively being used will appear in the window of the submarine as it moves on the screen. If the first cookie is actively being used, the relay cookie will appear on the window of the submarine, and vice versa. If there is no relay cookie to run with, the submarine's window will be empty.

Story
''A yellow submarine embarking on an adventure into the mysterious underwater world! Get ready to dive into the enchanting depths of the sea and explore the wonders that await!''

Trivia

 * Bubbly Submarine's internal name is "tr0224".