FISHERY BULLETIN: VOL. 87, NO. 1 



Bellingham 



Everett 

 Edmonds 



Seattle 



PACIFIC 

 OCEAN 



Olympia 



48 °N 



Figure 1.— Map of Puget Sound, Washington, USA showing the general location of scuba sampling 



sites (X). 



and was 65.5 m long and 3.8 m wide. The southern 

 half of the drydock, designated Transect 2, was 30 

 m south of Transect 1 and was 55 m long by 4.5 m 

 wide. The eastern and western ends of both Tran- 

 sects 1 and 2 were in 6.0 m and 9.0 m of water 

 (MLLW, i.e., Mean Lower Low Water), respec- 

 tively. 



Transect 3 was a portion of the Edmonds Marina 

 breakwater parallel to a Washington Department 

 of Fisheries' fishing pier. The transect was 150 m 

 in length by 5 m in width and covered a total area 

 of 750 m^. The breakwater consisted of large basalt 

 boulders that extended from 3 to 5 m (MLLW) below 

 the surface of the water. In addition to the break- 

 water, the transect included a sandy area with inter- 

 spersed boulders to a depth of 7 m (MLLW). 



Transect and Collection Dive Sites 

 and Procedures 



Each transect was sampled at least once a month. 

 Dives were made more frequently when spawning 

 activity increased. Fifty transect dives totalling 46 

 hours of bottom time were made. Physical data col- 

 lected on each dive included water temperature and 

 depth. Biological data gathered included number of 

 cabezon and number and depth of embryo masses. 

 Dives in spawning areas were made during all hours 

 of daylight. Collection of specimens for biological 

 data was by pneumatic speargun. Forty-eight col- 

 lection dives totalling 36 hours of bottom time were 

 made. Fifty female cabezon were collected through- 

 out Puget Sound, including areas in the Strait of 



146 



