Zig and Bernie try their umpteenth scheme to eat Marina, but when Sharko steps in at the last minute, Bernie gets flung out into the middle of the ocean. The harder he tries to get to the island, the further away he ends up...

While waiting for a bus to take him to Zig's island, Bernie spots an amusement park nearby. As the bus isn't coming for a while, he decides to go check it out. Bernie has so much fun that he loses track of time...

Bernie gets his shell dirty, and when he takes it off to clean it, someone swipes it! Bernie starts investigating, and when George's shell goes missing too, they join forces to find the thief...

Bernie searches the seabed for a weight to prime his catapult but a strange pumpkin follows him everywhere...Who's behind this prank squash that Bernie is scared of?

There's going to be an ocean floor marathon! First prize: a joyride in a submarine! Bernie already sees himself traveling back to the island... But the competition is tough!

Bernie asks Barbara to take him up to the surface so he can get back to Zig. The deep-sea diver has no idea what Bernie wants, but would love to add him to her seashell collection... Will he manage to make himself understood?