Growth layer patterns in teeth from the Franciscana, Pontoporia blainvillei: developing
a model for precision in age estimation.
Maria Cristina Pinedo and Aleta A. Hohn .........................................................................1

Harbor porpoise (Phocoena phocoena) abundance in Alaska: Bristol Bay to
southeast Alaska, 1991-1993.
M. Dahlheim, A. York, R. Towell, J. Waite and J. Breiwick ............................................28

The effects of acoustic alarms on the behavior of harbor porpoises (Phocoena
phocoena) in a floating pen.
R. A. Kastelein, H. T. Rippe, N. Vaughan, N. M. Schooneman, W. C. Verboom
and D. De Haan ..............................................................................................................46

Habitat use and preferences of indo-pacific humpback dolphins Sousa chinensis in
Algoa Bay, South Africa.
Leszek Karczmarski, Victor G. Cockcroft, Anton Mclachlan .......................................... 65

Occurrence, photo-identification and prey of pacific white-sided dolphins.
(Lagenorhyncus obliquidens) in the Broughton Archipelago, Canada 1984–1998
Alexandra Morton  .........................................................................................................80

Foraging strategies of sympatric killer whale (Orcinus orca) populations in Prince
William Sound, Alaska.
Eva Saulitis, Craig Matkin, Lance Barrett-Lennard, Kathy Heise and
Graeme Ellis ..................................................................................................................94

Aspects of growth in captive killer whales (Orcinus orca).
Steven T. Clark, Daniel K. Odell and C. Thad Lacinak ..................................................110

Bacular and testicular growth and allometry in the cape fur seal Arctocephalus
p. pusillus (Otariidae).
H. Oosthuizen and E. H. Miller .....................................................................................124

Changes in morphology with age in Mediterranean monk seals (Monachus monachus).
Roser Samaranch and Luis Mariano Gonzalez ...............................................................141

Pup survival in the Mediterranean monk seal (Monachus monachus) colony
at Cabo Blanco peninsula (western Sahara-Mauritania).
Manel Gazo, Fernando Aparicio, Miguel Angel Cedenilla, Jorge F. Layna and
Luis Mariano Gonzalez ............................................................................................... 158

Attendance patterns of California sea lion (Zalophus californianus) females
and pups during the non-breeding season at San Miguel Island.
Sharon R. Melin, Robert L. Delong, James R. Thomason and
Glenn R. Vanblaricom ..................................................................................................169

Laser safety thresholds for cetaceans and pinnipeds.
Heather M. Zorn, James H. Churnside and Charles W. Oliver ...................................... 186

Age- and sex-specific mortality and population structure in sea otters.
James L. Bodkin, Alexander M. Burdin and Dmitry A. Ryazanov (deceased) ................ 201

Reproductive rates of humpback whales off California.
Gretchen H. Steiger and John Calambokidis ..................................................................220

A diel pattern in vocal activity of short-beaked common dolphins, Delphinus delphis.
John C. Goold.............................................................................................................. 240

Observations on an interaction between a humpback whale (Megaptera
novaeangliae) and pilot whales (Globicephala melas).
J. N. Ciano and Roar Jorgensen.................................................................................... 245

Nocturnal acoustic location of the Galapagos fur seal Arctocephalus galapagoensis.
Godfrey Merlen ............................................................................................................ 248

A new tag for identifying seals.
Ailsa Hall, Simon Moss and Bernie McConnell ...............................................................254

Age at first parturition in a Mediterranean monk seal monitored long-term.
Manel Gazo, Luis Marino Gonzalez and Esteve Grau.......................................................257

A review of recent extralimital records of the bearded seal (Erignathus barbatus).
on the west European continental coast
Peter J. H. van Bree .......................................................................................................261

BOOK Reviews ............................................................................................................264

ERRATA ......................................................................................................................267

NEWS ..........................................................................................................................268

GUIDE FOR AUTHORS ..............................................................................................269

Polydactyly and other features of the manus of the vaquita, Phocoena sinus.
Joel G. Ortega-Ortiz, Bernardo Villa-Ramirez and Jorge R. Gersenowies ........................277

Surface behavior of bottlenose dolphins is related to spatial arrangement of prey.
Alejandro Acevedo-Guti?rrez and Nadine Parker ...........................................................287

A kinematic study of suction feeding and associated behavior and associated behavior
in the long-finned pilot whale, Globicephala melas (Traill).
Alexander Werth ............................................................................................................299

The diet of Galapagos sperm whales Physeter macrocephalus as indicated by fecal
analysis.
Sean C. Smith and Hal Whitehead ..................................................................................315

Right whales (Eubalaena glacialis) on Jeffreys Ledge: A habitat of unrecognized
importance?
Mason T. Weinrich, Robert D. Kenney and Phillip K. Hamilton .......................................326

Temporal variability in features used to photo-identify humpbackwhales (Megaptera
novaeangliae).
Alexis L. Blackmer, Scott K. Anderson and Mason T. Weinrich ......................................338

Measurement of photographic quality and individual distinctiveness for the photographic
identification of humpback whales (Megaptera novaeangliae).
Nancy Friday, Tim D. Smith, Peter T. Stevick and Judy Allen ..........................................355

Dive characteristics of satellite-monitored blue whales (Balaenoptera musculus) off the
central California coast.
B. A. Lagerquist, K. M. Stafford and B. R. Mate ............................................................375

Identifying diurnal foraging habitat of endangered Hawaiian monk seals using a seal-
mounted video camera.
Frank A. Parrish, Mitchell P. Craig, Timothy J. Ragen, Gregory J. Marshall and
Birget M. Buhleier ..........................................................................................................392

A Bayesian analysis to estimate loss in squid catch due to the implementation of a sea
lion population management plan.
Mark N. Maunder, Paul J. Starr and Ray Hilborn ...........................................................413

Steller sea lion body condition indices.
K. W. Pitcher, D. G. Calkins and G. W. Pendleton ........................................................427

NOTES

A two-dimensional accoustic localization system for marine mammals.
V. M. Janik, S. M. Van Parijs and P. M. Thompson ......................................................437

Tucuxi (Sotalia fluviatilis) occurs in Nicarauga, 800 km north of its previously known
range.
Thomas Carr and Robert K. Bonde ...............................................................................447

Confirmed sightings of dusky dolphins (Lagenorhynchus obscurus) in southern
Australian waters.
Peter C. Gill, Graham J. B. Ross, William H. Dawbin and Hans Wapstra .......................452

Variation in eye-patch shape of killer whales (Orcinus orca) in New Zealand waters.
Ingrid N. Visser and Pirjo M?kel?inen ...........................................................................459

Pinniped brain sizes.
Olaf R. P. Binnida-Emonds ...........................................................................................469

A design for a two-dimensional boat-bound hydrophone array for studying harbor
seals, Phoca vitulina.
Sofie M. Van Parijs, Gordon D. Hastie and Paul M. Thompson ....................................481

Reversed molting patterns in starvling gray (Halichoerus grypus) and harp (Phoca
groenlandica) seal pups.
Christian Lyderson, Kit M. Kovacs and Mike O. Hammill ............................................489

Infanticide and cannibalism in the New Zealand sea lion, Phocarctos hookeri.
I. S. Wilkinson, S. J Childerhouse, P. J. Duignan and F. M. D. Gulland .........................494

Marking of southern elephant seals with passive integrated transponders.
Filippo Galimberti, Simona Sanvito and Luigi Boitani .....................................................500

Long distance movement of a southern elephant seal (Mirounga leonina) from
Macquarie Island to Peter 1 ?y.
Mark A. Hindell and Clive R. McMahon ......................................................................504

BOOK Reviews ..........................................................................................................508

LETTERS ....................................................................................................................511

ERRATUM .................................................................................................................512

The northeastern Alborean Sea, an important breeding and feeding ground for
the long-finned pilot whale (Globicephala melas) in the Mediterranean Sea.
Ana Ca?adas and Ricardo Sargarminaga ......................................................................513

Seasonal and diurnal trends of chorusing humpback whales wintering in waters off
western Maui.
Whitlow W. L. Au, Joseph Mobley, William C. Burgess, Marc O. Lammers and
Paul E. Nachtigall ........................................................................................................530

Analysis of mitochondrial DNA diversity within and between North and South
Atlantic right whales.
S. Malik, M. W. Brown, S. D. Kraus and B. N. White ................................................545

Functional reduction of the southern minke whale (Balaenoptera acutorostrata)
testis during feeding season.
Toshihiro Magoe, Takatoshi Suzuki, Masatsugu Asada, Yutaka Fukui, Hajime
Ishikawa and Seiji Oshumi ..........................................................................................559

Do photoperiod and temperature influence the molt cycle of Phoca vitulina in
captivity?
Giulia Mo, Caludia Gili and Paolo Ferrando ................................................................570

Diet of harp seals (Pagophilus groenlandicus) in nearshore northeast Newfoundland:
Inferences from stable-carbon ( C) and nitrogen ( N) isotope analysis.
John W. Lawson and Keith A. Hobson ......................................................................578

Vocal individuality in mother and pup South American fur seals, Arctocephalus
australis.
Alana V. Phillips and Ian Stirling .................................................................................592

Aerial videogrammetry from a tethered airship to assess manatee life-stage structure.
Richard O. Flamm, Edward C. G. Owen, Caryn F. W. Owen, Randall S. Wells and
Doug Nowacek .........................................................................................................617

NOTES

Re-evaluation of geographic variation in the white flank patch of dalli-type Dall's
porpoise.
Masao Amano, Miho Marui, Tamara Guenther, Hiroshi Ohizumi and
Nobuyuki Miyazaki ..................................................................................................631

Sperm morphology and morphometry of Burmeister's porpoise (Phocoena
spinipinnis).
Adela Beilis, P. Cetica and M. S. Merani ..................................................................636

First recorded mass stranding of short-finned pilot whales (Globicephala
macrorhynchus Gray, 1846) in the northeastern Atlantic.
Angel F. Gonz?lez, Alfredo L?pez and Xulio Valeiras ...............................................640

"Kerplunking": Surface fluke-splashes during shallow-water bottom foraging by
bottlenose dolphins.
Richard C. Connor, Michale R Heithaus, Per Berggren and Jennifer L. Miksis ...........646

Spontaneous lactation by an adult Tursiops truncatus in response to a stranded
Steno bredanensis calf.
C. Gaspar, R. Lenzi, M. L. Reddy and J. Sweeney ...................................................653

Interactions between killer whales  (Orcinus orca)  and sperm whales (Physeter
macrocephalus)  with a longline fishing vessel.
C. P. Nolan, G. M. Liddle and J. Elliot .....................................................................658

Measuring sizes of humpback whales (Megaptera novaeangliae) by underwater
videogrammetry.
Scott S. Spitz, Louis M. Herman and Adam A. Pack ................................................664

Relationship between apnea duration and rate of oxygen consumption in captive
gray seals while sleeping or resting on land.
Loren D. Knopper and Patrice Boily .........................................................................676

An aberrantly pigmented southern elephant seal (Mirounga leonina) at Iles
Kerguelen, southern Indian Ocean.
Joel Bried and Daniel Haubreux ................................................................................681

Evaluating management initiatives aimed at reducing the mortality of dugongs in gill
and mesh nets in the Great Barrier Reef World Heritage Area.
Helene Marsh ...........................................................................................................684

BOOKS
Reviews ....................................................................................................................695

Migration and population structure of northeastern Pacific whales off coastal
British Columbia: An analysis of commercial whaling records from 1908-1967.
Edward J. Gregr, Linda Nichol, John K. B. Ford, Graeme Ellis and
Andrew W. Trites .....................................................................................................699

Changes in the relative abundance and distribution of gray whales (Eschrichtius
robustus) in Magdalena Bay, Mexico, during an El Nino event
S. C. Gardner and S. Chavez-Rosales ......................................................................728

Characteristics of minke whale (Balaenoptera acutorostrata) pulse trains
recorded near Puerto Rico
David K. Mellinger, Carol D. Carson and Christopher W. Clark ................................739

The reliability of skinfold-calipers for measuring blubber thickness of Steller sea
lion pups (Eumetopias jubatus)
Remco A. H. Jonker and Andrew W. Trites ..............................................................757

Use of photographic identification in capture-recapture studies of Mediterranean
monk seals
Jaume Forcada and Alex Aguilar ..............................................................................767

Survival rates of sea otter pups in Alaska and California
Charles Monnett and Lisa Mignon Rotterman ............................................................794

NOTES

Diving behavior and swimming speed of free-ranging harbor porpoise, Phocoena
phocoena
Seiji Otani, Yasuhiko Naito, Akiko Kato and Akito Kawamura .................................811

Habitat selection of foraging bottlenose dolphins in relation to boat density near
Clearwater, Florida
Mark C. Allen and Andrew J. Read ..........................................................................815

Quantifying dolphin occupancy patterns
J. W. Durban, K. M. Parsons, D. E. Claridge and K. C. Balcomb .............................825

Co-ordinated attack behavior and prey sharing by killer whales at Crozet
Archipelago: Strategies for feeding on negatively-bouyant prey.
Christophe Guinet, Lance G. Barrett-Lennard and Bertrand Loyer .............................829

A review of records of the extinct West Indian monk seal, Monachus tropicalis
(Carnivora: Phocidae), for the Netherlands Antilles
Aldophe O. Debrot ...................................................................................................834

BOOKS
    Reviews ................................................................................................................838

INDEX .....................................................................................................................847