Title: California fish and game
Identifier: californiafishga66_2cali (find matches)
Year: [1] (s)
Authors: California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish and Game
Subjects: Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons
Publisher: (San Francisco, etc. ) State of California, Resources Agency, Dept. of Fish and Game
Contributing Library: California Department of Fish and Game
Digitizing Sponsor: Internet Archive

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122 CALIFORNIA FISH AND CAME posterior portion 14 cm long. The specimen was disembowelled and weighed in several pieces for an estimated total weight of 80 kg.
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FIGURE 1 Femal scalloped hammerhead shark, Sphyrna lewini, taken about 21 km west of Santa Barbara, California in August 1977. insert; Frontal lobes. Photograph by Shane Anderson, August 1977. The shark was not gravid. The stomach contained mostly digested remains of five fishes, four of which were tentatively identified as Pacific bonito, Sarda chiliensis. The abdominal cavity contents and gills were free of parasites. On the same day, another female hammerhead shark was caught by a sport fishing party from Santa Barbara Harbor. Jerry Sylvia reported that he and two other fishermen were trolling at the surface with fresh mackerel fillet (species unknown) about 1.5 km off the Harbor when they caught the shark. This specimen was estimated to weigh 80 kg without the head and viscera. We were unable to examine it and no other measurements were available. A comparison of photographs and teeth of this specimen to that of the other showed them to be the same species. Species of hammerhead sharks similar in appearance to Sphyrna lewinidiXe the smooth hammerhead, 5. zygaena, and great hammerhead, 5. mol<arran. S. lewini can be distinguished from the former by having four, rather than one or three, lobes on the anterior margin of the head, and from the latter by having a second dorsal fin with a free rear margin twice as long as the fin is high. Since hammerhead shark species are known to school, it may be that these two sharks and possibly more, traveled northward for some distance as a group. There is no other published record of 5. lewiniirom California. One earlier report from southern California was erroneous (Kato, Springer, and Wagner 1967). The previous northernmost published record was Isia San Marcos in the

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