10. Northern anchovy— location of centers of sighting for school or school groups. Pt. Hueneme to San Diego, 1970-73 24 



1 1 . Northern anchovy— location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1 974-78 25 



12. Northern anchovy index values for day and night observations in arbitrary units and total California catch 26 



13. Northern anchovy night index values in arbitrary units for the major fishing areas 26 



14. Pacific sardine— location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1962-65 .... 27 



15. Pacific sardine— location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1966-69 .... 28 



16. Pacific sardine — location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1962-65 29 



17. Pacific sardine— location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1966-69 30 



18. Pacific sardine— location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1970-73 31 



19. Pacific sardine index values in arbitrary units for day and night observations and total California catch 32 



20. Pacific bonito— location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1962-65 33 



21. Pacific bonito— location of centers of sighting for school or school groups. Monro Bay to San Nicolas Island. 1966-69 34 



22. Pacific bonito— location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1970-73 35 



23. Pacific bonito — location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1974-78 36 



24. Pacific bonito — location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1962-65 37 



25. Pacific bonito— location of centers of sighting for school or school groups. Pt. Hueneme to San Diego. 1966-69 38 



26. Pacific bonito— location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1970-73 39 



27. Pacific bonito — location of centers of sighting for school or school groups. Pt. Hueneme to San Diego, 1974-78 40 



28. Pacific bonito index values in arbitrary units for day and night observations and total California catch 41 



29. Pacific bonito day index values in arbitrary units for the major fishing areas 41 



30. Pacific mackerel — location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1962-65 ... 42 



31. Pacific mackerel— location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1966-69. . . 43 



32. Pacific mackerel— location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1974-78 ... 44 



33. Pacific mackerel — location of centers of sighting for school or school groups. Pt. Hueneme to San Diego, 1962-65 45 



34. Pacific mackerel— location of centers of sighting for school or school groups. Pt. Hueneme to San Diego. 1966-69 46 



35. Pacific mackerel— location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1970-73 47 



36. Pacific mackerel— location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1974-78 48 



37. Pacific mackerel index values in arbitrary units for day and night observations and total California catch 49 



38. Jack mackerel— location of centers of sighting for school or school groups. Morro Bay to San Nicolas Island. 1962-65 50 



39. Jack mackerel— location of centers of sighting for school or school groups, Monro Bay to San Nicolas Island, 1966-69 51 



40. Jack mackerel— location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1970-73 52 



41. Jack mackerel— location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1974-78 53 



42. Jack mackerel— location of centers of sighting for school or school groups. Pt. Hueneme to San Diego, 1962-65 54 



43. Jack mackerel— location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1966-69 55 



44. Jack mackerel— location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1970-73 56 



45. Jack mackerel— location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1974-78 57 



46. Jack mackerel index values in arbitrary units for day and night observations and total California catch 58 



47. Bluefin tuna— location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1962-78 59 



48. Bluefin tuna— location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1962-78 60 



49. Bluefin tuna— location of centers of sighting for school or school groups, San Diego to Puma Baja, 1962-78 61 



50. Albacore tuna— location of centers of sighting for school or school groups. Pt. Hueneme to San Diego, 1962-78 62 



51. Albacore tuna— location of centers of sighting for school or school groups. San Diego to Punta Baja, 1962-78 63 



52. Yellowtail— locations of school or school group sightings, Morro Bay to San Nicolas Island, 1962-78 64 



53. Yellowtail— location of centers of sighting for school or school groups. Pt. Hueneme to San Diego. 1962-78 65 



54. Pacific barracuda— location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1962-78 . . 66 



55. Pacific barracuda— location of centers of sighting for school or school groups, Pt. Hueneme to San Diego, 1962-78 67 



56. White seabass— location of centers of sighting for school or school groups. Morro Bay to San Nicolas Island, 1962-78 68 



57. White seabass— location of centers of sighting for school or school groups. Half Moon Bay to Pt. Piedras Blancas, 1962-78 69 



58. Basking shark— locations of sighting one or more animals. Morro Bay to San Nicolas Island. 1962-78 70 



59. Basking shark— locations of sighting one or more animals. Half Moon Bay to Pt. Piedras Blancas, 1962-78 71 



60. Squid— location of centers of sighting for school or school groups, Morro Bay to San Nicolas Island, 1962-78 72 



61. Squid— location of centers of sighting for school or school groups. Pt. Hueneme to San Diego, 1962-78 73 



62. Three independent estimates of Pacific mackerel abundance 74 



63. Aerial, larval, and acoustic indices for the northern anchovy 74 



64. Comparison of the anchovy aerial index (night) and the anchovy spawning biomass 75 



65 . Regression of aerial survey day index for Pacific bonito against partyboat CPUE index 3 yr earlier 75 



Tables 



1 . Observation effort off California for pelagic commercial fish in units of block area overflights by zone 2 



2. Range of tonnage and tonnage range values 3 



