. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 232 CALIFORNIA FISH AND CAME )23°10'. FIGURE 1. Location of study sites. Dives were made from a boat at slack water. Study depths ranged from 0 to m below mean lower low water (MLLW). A 100-m steel transect line was established at a depth of m to aid in orientation of the divers to the substrate and to delimit each study area. All nests encountered were marked by leaving a numbered yellow rock in a nearby conspicuous locatio
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 232 CALIFORNIA FISH AND CAME )23°10'. FIGURE 1. Location of study sites. Dives were made from a boat at slack water. Study depths ranged from 0 to m below mean lower low water (MLLW). A 100-m steel transect line was established at a depth of m to aid in orientation of the divers to the substrate and to delimit each study area. All nests encountered were marked by leaving a numbered yellow rock in a nearby conspicuous location. On all dives we attempted to relocate previously marked nests as well as to find new nests. Each nest was evaluated as to stage of egg development (pink = fresh; white = intermediate age; gray = near hatching), extent of vertebrate or invertebrate predation, and reduction in size of egg mass from hatching or predation. Nests were categorized as follows: (i) in crevice on cliff face; (ii) under boulders greater than 2 m; (iii) under boulders less than 2 m; or (iv) not attached to substrate (loose). Observations were recorded on slates underwater and tran- scribed to paper at the end of the day. Depths were measured to the nearest 5-ft interval with oil-filled depth gauges and converted to metres below MLLW from tide tables. RESULTS Each of the three study areas has a substrate of vertical cliffs at shallow depths (Oto m below MLLW) and high relief bedrock at intermediate depths ( to m below MLLW). Strong tidal currents (up to km/h) sweep the more exposed sections of the transects. Sea surface temperatures range annually from 7 to Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish an
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