When a silly prank lands Squizzard in deep trouble, he comes down with a case of the barnacle blues. Instead of going to the Coral Carnival with his friends, he'll have to do the swim-possible and turn Seaweed Elementary's junk-filled basement into an activity room for after-school clubs. But there just may be hidden treasures to discover if Squizzard can stop all the funny business long enough to find them.

1. Squids -- Comic books, strips, etc.; 2. Squids -- Juvenile fiction.; 3. Marine animals -- Comic books, strips, etc.; 4. Marine animals -- Juvenile fiction.; 5. Friendship -- Comic books, strips, etc.; 6. Friendship -- Juvenile fiction.; 7. Conduct of life -- Comic books, strips, etc.; 8. Conduct of life -- Juvenile fiction.; 9. Practical jokes -- Comic books, strips, etc.; 10. Practical jokes -- Juvenile fiction.; 11. Elementary schools -- Comic books, strips, etc.; 12. Elementary schools -- Juvenile fiction.; 13. Graphic novels -- Juvenile fiction.; 14. Squids -- Fiction.; 15. Marine animals -- Fiction.; 16. Friendship -- Fiction.; 17. Practical jokes -- Fiction.; 18. Behavior -- Fiction.; 19. Calmars -- Bandes dessinées.; 20. Calmars -- Romans, nouvelles, etc. pour la jeunesse.; 21. Faune marine -- Bandes dessinées.; 22. Faune marine -- Romans, nouvelles, etc. pour la jeunesse.; 23. Amitié -- Bandes dessinées.; 24. Amitié -- Romans, nouvelles, etc. pour la jeunesse.; 25. Morale pratique -- Bandes dessinées.; 26. Morale pratique -- Romans, nouvelles, etc. pour la jeunesse.; 27. comic books.; 28. comic strips.; 29. Conduct of life.; 30. Elementary schools.; 31. Friendship.; 32. Marine animals.; 33. Practical jokes.; 34. Squids.; 35. Juvenile works.; 36. Fiction.; 37. Comics (Graphic works); 38. Graphic novels.; 39. Bandes dessinées.;