Pattern similarity in shared codas from sperm whales (Physeter catodon).
KAREN E. MOORE, WILLIAM A. WATKINS AND PETER L. TYACK ............................1

Comparison of the stomach contents of southern elephant seals, Mirounga leonina,
at Macquarie and Heard islands.
K. GREEN AND H . R. BURTON ........................................................................................10

Biliary bile acid composition of the Physeteridae (sperm whales).
LEE R. HAGEY, DANIEL ODELL, STEVEN S. ROSSI,
DIANE L. CROMBIE AND ALAN F. HOFMANN .............................................................23

Breeding biology of southern elephant seals in Patagonia
C. CAMPAGNA, M. LEWIS AND R. BALDI ......................................................................34

Mass estimates using body morphology in Steller sea lions.
MICHAEL A. CASTELLINI AND DONALD G. CALKINS ................................................48

Sperm whales tagged with transponders and tracked underwater by sonar.
WILLIAM A. WATKINS, MARY ANN DAHER, KURT M. FRISTRUP,
TERRANCE J. HOWALD AND GIUSEPPE NOTARBARTOLO DI SCIARA ....................55

NOTES

Possible lunar influence on hauling-out behavior by the Pacific harbor seal
(Phoca vitulina richardsi).
PETER WATTS .....................................................................................................................68

Evidence of feeding by humpback whales (Megaptera novaeangliae) in the Baja
California breeding ground, Mexico.
DIANE GENDRON AND JORGE URBAN R. .....................................................................76

A newly described muscle in odontocete cetaceans.
D. ANN PABST AND WILLIAM A. MCLELLAN ..............................................................81

Movement of a humpback whale (Megaptera novaeangliae) between Japan and Hawaii.
J. D. DARLING AND S. CERCHIO .....................................................................................84

An experimental aerial survey for vaquita (Phocoena sinus) in the northern Gulf of
California, Mexico.
JAY BARLOW, LUIS FLEISCHER, KARIN A. FORNEY
AND OCTAVIO MARAVILLA-CHAVEZ ..........................................................................89

The Marine Mammal Inventory Report: independent verification of a captive marine
mammal database.
JONATHAN L. TEMTE ........................................................................................................95

Size and shape of male Australian fur seals, Arctocephalus pusillus doriferus.
D. PEMBERTON, R. KIRKWOOD, R. GALES AND D. RENOUF ....................................99

Social and sexual behavior of bowhead whales in fall in the western arctic: a reexamination
of seasonal trends.
BERND WURSIG, JO GUERRERO AND GREGORY K. SILBER ....................................103

ERRATUM ...........................................................................................................................110

NEWS ..................................................................................................................................111

BOOKS

Reviews ................................................................................................................................112

Sensory Abilities of Cetaceans: Laboratory and Field Evidence.
J. Thomas and R. Kastelein, editors. Plenum Press, New York.
Reviewed by Paul E. Nachtigall.

Manatees and Dugongs. J. E. Reynolds, III, and D. K. Odell.
Facts On File, New York, NY.
Reviewed by Galen B. Rathbun.

GUIDE FOR AUTHORS .....................................................................................................116

Identification of geographic forms of common dolphin (Delphinus delphis) from
aerial photogrammetry .
WAYNE L. PERRYMAN AND MORGAN S. LYNN .......................................................119

Population structure of the bottlenose dolphin (Tursiops truncatus) as determined by
restriction endonuclease analysis of mitochondrial DNA.
THOMAS E. DOWLING AND WESLEY M . BROWN ....................................................138

Reproductive characteristics of female sea otters.
RONALD J. JAMESON AND ANCEL M. JOHNSON .....................................................156

Diet and foraging behavior of sea otters in southeast Alaska.
RICK G. KVITEK, C. EDWARD BOWLBY AND MICHELLE STAEDLER ....................168

The maximum range of vocal communication in air between a harbor seal (Phoca vitulina)
pup and its mother.
A. J. REIMAN AND J. M. TERHUNE ................................................................................182

NOTES

Asymmetry in the skulls of California sea otters (Enhydra lutris nereis).
ARYAN I. ROEST ..............................................................................................................190

Rostral fusion as a criterion of cranial maturity in the common dolphin, Delphinus delphis.
WILLIAM E. PERRIN AND JOHN E. HEYNING .............................................................195

The Florida manatee: cytochrome b DNA sequence.
JANICE L. BRADLEY, SCOTT D. WRIGHT AND PETER M. MCGUIRE .......................197

Blood chemistries and body condition of Steller sea lion pups at Marmot Island, Alaska.
M. A. CASTELLINI, R. W. DAVIS, T. R. LOUGHLIN AND
T. M. WILLIAMS ................................................................................................................202

Recording underwater sounds of free-ranging dolphins while underway in a small boat.
LAELA S. SAYIGH, PETER L. TYACK AND RANDALL S. WELLS ..............................209

High-energy behaviors in humpback whales as a source of sloughed skin for molecular analysis.
PHILLIP J . CLAPHAM, PER J . PALSBOLL AND DAVID K. MATTILA .......................213

BOOKS

Reviews ................................................................................................................................221

Individual Recognition of Cetaceans: Use of Photo-identification and Other Techniques
to Estimate Population Parameters. P.S. Hammond, S. A. Mizroch, and G. P. Donovan, eds.
Reports of the International Whaling Commission, Special Issue 12. Cambridge, UK.
Reviewed by Mark A. Fraker.

The Behaviour of Pinnipeds. Edited by Deane Renouf. London: Chapman & Hall.
Reviewed by Sheila S. Anderson.

NEWS ..................................................................................................................................226

Long-range movements of South Atlantic right whales Eubalaena australis.
PETER B. BEST, R. PAYNE, V. ROWNTREE,
JOSE TRUDA PALAZO AND MARIA DO CARMO BOTH .............................................227

Estimated population size of the California gray whale.
S. T. BUCKLAND, J. M. BREIWICK, K. L. CATTANACH AND J. L. LAAKE ..............235

Immobilization of walrus with etorphine hydrochloride and Zoletilr.
DAVID GRIFFITHS, OYSTEIN WIIG AND IAN GJERTZ ...............................................250

Description of an anomalous monodontid skull from West Greenland: a possible hybrid?
MADS P. HEIDE-JORGENSEN AND RANDALL R. REEVES .........................................258

Vocalizations of a captive juvenile and free-ranging adult-calf pairs of Bryde's whales,
Balaenoptera edeni.
PEGGY L. EDDS, DANIEL K. ODELL AND BERNIE R. TERSHY ..................................269

Icebreaker noise in Lancaster Sound, N.W.T., Canada: implications for
marine mammal behavior.
SUSAN E. COSENS AND LARRY P. DUECK .................................................................285

Photoperiod defines the phenology of birth in captive California sea lions
JONATHAN L. TEMTE AND JO TEMTE ..........................................................................301

NOTES

Appearance of juvenile humpback whales feeding in the nearshore waters of Virginia.
W. MARK SWINGLE, SUSAN G. BARCO, THOMAS D. PITCHFORD,
WILLIAM A. MCLELLAN AND D. ANN PABST ............................................................309

First record of a live-stranded pan-tropical spotted dolphin (Stenella attenuata graffmani)
in central California, USA.
GRAHAM WORTHY, DAVID CASPER, HOWARD RHINEHART
AND MICHAEL MOSER ...................................................................................................316

Relative abundance of Cetacea in the Canal de Ballenas,Gulf of California.
DAWN BREESE AND BERNIE R. TERSHY .....................................................................319

Return and survival of humpback whale (Megaptera novaeangliae) calves born to a
single female in three consecutive years.
MASON T. WEINRICH, JENNIFER BOVE AND NANCY MILLER ...............................325

First case of lobomycosis in a bottlenose dolphin from southern Brazil
P. C. SIMOSE-LOPES, G. S. PAULA, M. C. BOTH, F. M. XAVIER
AND A. C. SCARAMELLO ................................................................................................329

Life-threatening contact between a woman and a pilot whale captured on film.
SUSAN H. SHANE, LEE TEPLEY AND LISA COSTELLO .............................................331

BOOKS

Reviews ................................................................................................................................337

Sea Mammals and Oil: Confronting the Risks. J. R. Geraci and D. J. St. Aubin, eds.
Academic Press, New York.
Reviewed by Randall Davis.

ERRATUM ...........................................................................................................................340

NEWS ..................................................................................................................................340

MEMORIES

V. Michael Kozicki ...............................................................................................................342

Mortality of sea otters in Prince William Sound following the Exxon Valdez oil spill.
ROBERT A. GARROTT, L. LEE EBERHARDT AND DOUGLAS M. BURN ....................343

Implications of non-linear density dependence.
BARBARA L. TAYLOR AND DOUGLAS P. DEMASTER ...............................................360

The southern sea lion, Otaria byronia or Otaria flavescens?
DIEGO H. RODRIGUEZ AND RICARDO O. BASTIDA ...................................................372

Reactions of humpback whales to skin biopsy sampling on a West Indies breeding ground.
PHILLIP J. CLAPHAM AND DAVID K. MATILLA .........................................................382

Age, growth, and reproduction of the finless porpoise, Neophocaena phocaenoides,
in the coastal waters of western Kyushu, Japan.
MIKI SHIRAKIHARA, AKIRA TAKEMURA AND KUNIO SHIRAKIHARA .................392

Survival rates for the Hawaiian monk seal (Monachus schauinslandi).
WILLIAM G. GILMARTIN, THEA C. JOHANOS AND L. LEE EBERHARDT ................407

NOTES

Cannabalism by grey seals, Halichoerus grypus, on Amet Island, Nova Scotia.
CHRISTIAN B�DARD, KIT KOVACS AND MIKE HAMMILL ......................................421

Selecting sampling frequency for measuring diving behavior.
I. L. BOYD ...........................................................................................................................424

Separation of humpback whale mothers and calves on a feeding ground in early autumn.
LISA BARAFF AND MASON T. WEINRICH ...................................................................431

Diurnal and seasonal behavior patterns of bottlenose dolphins (Tursiops truncatus).
STEFAN BR�GER .............................................................................................................434

Stranding of a specimen of Gervais' beaked whale (Mesoplodon europaeus)
on the coast of West Africa (Mauritania).
DANIEL ROBINEAU AND MICHEL VELY .....................................................................438

BOOKS

Reviews ................................................................................................................................441

Genetic Ecology of Whales and Dolphins. A. R. Hoelzel, ed.
The International Whaling Commission. Cambridge, UK.
Reviewed by Kit M. Kovacs.

Recent publications available ..................................................................................................444

LETTERS

Scientific Correspondence .....................................................................................................445

INDEX................................................................................................................................. 447