This season consists of 31 episodes.
1.Episode 119 (Sailtastic adventure) (Sep 25, 1988)
2.Episode 120 (Cops And Bots) (Oct 2, 1988)
3.Episode 121 (Nonnyor And The Acorns) (Oct 9, 1988)
4.Episode 122 (Horsing Around) (Oct 16, 1988)
5.Episode 123 (Doctor Genies) (Oct 23, 1988)
6.Episode 124 (Muddy Madness) (Oct 30, 1988)
7.Episode 125 (The Fight In Little Fish's Life) (Special) (Nov 11, 1988)
8.Episode 126 (Bubble Guppies: The Movie) (Nov 25, 1988)
9.Episode 127 (Guppies of glory) (Dec 4, 1988)
10.Episode 128 (Fintastic fun in the snow) (Dec 11, 1988)
11.Episode 129 (Bubble Guppies: A Christmas Carol) (Special) (Dec 23, 1988)
12.Episode 130 (Secture Fox) (Jan 1, 1989)
13.Episode 131 (The Heart Of The Jungle) (Jan 8, 1989)
14.Episode 132 (It's Great To Be A Ghost) (Jan 15, 1989)
15.Episode 133 (The Key To The Nile) (Jan 22, 1989)
16.Episode 134 (The Legend Of The Volcano Sisters) (Jan 29, 1989)
17.Episode 135 (Scared Of You) (Feb 5, 1989)
18.Episode 136 (Whodunit) (Feb 12, 1989)
19.Episode 137 (Molly's Nutcracker) (Feb 19, 1989)
20.Episode 138 (Masters Of Fishjitzu Part One) (Feb 26, 1989)
21.Episode 139 (Pink Elephants on Parade) (Mar 5, 1989)
22.Episode 140 (Nonny and the Chocolate Factory) (Special) (Mar 17, 1989)
23.Apocalypse (full lenght movie) (Mar 24, 1989)
24.Episode 141 (The Dark Star X) (Violent) (Apr 5, 1989)
25.Episode 142 (The Little Shop Of Horrors) (Apr 12, 1989)
26.Episode 143 (Deema Stars) (Apr 19, 1989)
27.Episode 144 (Bubble Guppies Mystery Dungeon:Red Rescue Team) (Special) (Apr 28, 1989)
28.Episode 145 (Switcheroo) (May 7, 1989)
29.Episode 146 (Sir Nonny The Nice) (May 14, 1989)
30.Episode 147 (Rupert you shrunk the guppies) (May 21, 1989)
31.Episode 148 (A World Of Monsters) (May 28, 1989)