nient the whale and subsequently 

 track and obtain data Ironi it was de- 

 signed and manufactured by Ocean 

 Applied Research Corporation. San 

 Diego, California. Hugh Martin and 

 Romaine Maiefskl. both from this 

 organization, actively participated in 

 the attachment of the instrumentation 

 to the animal and the initial stages of 

 tracking. J. S. Leatherwood. J. Hall. 

 Bruce Parks, and L. McKinley. of the 

 Naval Undersea Center. .San Diego. 

 California, and the Commanding Of- 

 ficer of the RV Cape and his crew 

 were directly instrumental in the suc- 

 cess of this project. The radio contact 

 with the instrumented whale on 5 May 

 1972 was accomplished by Paul Se- 

 besta. NASA Ames Research Center. 

 Moffett Field. Calif., using equipment 

 supplied b\ the author. 



due to the destruction or displacement 

 of melanin in the epidermis of the 

 area treated. 



LITERATURE CITED 



Eckman. S. 1953. Zoogeography ol llie 

 sea. Sidgwick and Jackson Ltd.. Lond.. 

 417p. 



Evans. W. E. 1970. Uses of advanced 

 space technology and upgrading ihe future 

 study of oceanology. AIAA 7th Annual 

 Mtg. and Tech. Display. Houston, Tex., 

 Pap. No. 70- 1:?.^, p. I-.^. 



. 1971. Orientation behavior of 



delphinids; Radio telemelric studies. Ann. 

 N.Y. Acad.Sci. 188:142-160. 



. In press. Radio lelenietnc 



studies of two species of small odonlocete 

 cetaceans. In W. E. Schevill (editor). 

 The Whale Problem. Harvard Press, 

 Cambridge, pp. 385-394. 



Martin, H., W. E. Evans, and C. A. Bowers. 

 1971. Methods for radio tracking marine 

 mammals in the open sea. IEEE Eng. in 

 the Ocean Environ. Conf.. p. 44-49. 



Wylhe. J. G. 1966. Geostrophic How of 

 the California Current at the surface and 

 at 200 meters. Calif. Coop. Oceanic Fish. 

 Invest. Atlas No. 4. ,\iii + 288 charts. 



MFR Paper 1058. From Marine Fisheries Review, Vol. 

 36, No. 4, April 1974. Copies of ttiis paper, in limited 

 numbers, are available from D83. Technical Information 

 Division, Environmental Science Information Center, 

 NCAA. Washington. DC 20235. 



MFR PAPER 1059 



POSTSCRIPT 



During the period 2 January 197.^- 

 21 March 1973. the author investigated 

 37 reported resightings of Gigi. Al- 

 though most of these reports did not 

 check out, on 5-6 January, a Captain 

 Paul Roth. USN. and a Mr. and Mrs. 

 Sherwood of San Diego independently 

 described behavior of a 9-10 meter 

 California gray whale sighted inside 

 the kelp off the Sunset Cliffs area of 

 Point Loma. San Diego. California. 

 In both cases the whale, light in color. 

 approached close to small vessels less 

 than 10 meters, rolled, and frolicked 

 around. On 15 March we received a 

 report from the MV Loiii; Bench 

 Prince that a whale of similar size 

 and with white tail Hukes (see Figure 

 3) and a fiO cm X 60 cm square white 

 scar behind the blow hole was sighted 

 frolicking around the vessel by 178 

 whale watchers. The location of this 

 sighting was 3-4 miles off Point 

 Fermin. This latter sighting is es- 

 pecially interesting since on 6 March 

 1972, one week prior to release, Gigi 

 II was branded using cryogenics with 

 a 60 cm x 60 cm mark, midline on the 

 back just posterior to the blow hole. 

 This form of marking, called "freeze 

 branding. " results in a white scarring 



Capture and Harnessing of Young 



California Gray Whales, Eschrichtius robustus 



KENNETH S. NORRIS antd ROGER L, GENTRY 



ABSTRACT 



1 lii\ paper reptirls mi the tleuiils i>f capture , liarnessiiii;. ircukiiii;. ami lianiess 

 release for three suckluiii i:ra\ u/ki/cv. These lesls are ihe firsl steps in a pr(ii;raiii 

 Id ilevelop new means af clala acqiiisilion and recovery jri'in wliales diirini; iheir 

 mii^raiiinis. I) is hoped hy tliese means u> develop new infornuilion ahoiil 

 popiilaliini routes and hence population immhcrs to assist nianai;einent. Capture 

 was hy tail noosiiii^ and liead nelliiii; from a fishins; vessel equipped with a 

 swonljisli plank. The liarness. placed on the inptive ashore, was held in place 

 over tlie pectoral fins and hcuk hv means of a pair of inelal plates held together 

 hy a \oliihle nnc.;ne\inm holt . Trackiiii^ was hy radio. 



INTRODUCTION 



Informed whale management re- 

 quires adequate knowledge of popula- 

 tion numbers. Uncertainly about mi- 

 gratory pathways and population mi.\- 

 ing makes determination of such num- 

 bers uncertain for some whales such 

 as the humpback {Mci^aptera novaeaii- 

 Siliae). the blue whale {Balaenoptera 

 iniisciihis). the (in whale iBalaenop- 

 lerii phxsaliis). and the minkc whale 



{Balaenopiera aciorostraia). Thus pre- 

 cise information on migration routes 

 of these and other marine mammals 

 would materially assist in the develop- 

 ment of sound management practice 

 (Anonymous, in press). 



In spite of decades of work with 

 Discovers and other tagging methods 

 (Clarke, 1957) our knowledge of whale 

 migration remains highly incomplete. 

 Because such information is needed 

 for some protected species, new tag- 



58 



