T. Adachi, D. P. Costa, P. W. Robinson, S. H. Peterson, M. Yamamichi et al., Searching for prey in a three-dimensional environment: hierarchical movements enhance foraging success in northern elephant seals, Functional Ecology, vol.16, issue.2, 2016.
DOI : 10.1111/ele.12149

M. Authier, A. Dragon, P. Richard, Y. Cherel, and C. Guinet, O' mother where wert thou? Maternal strategies in the southern elephant seal: a stable isotope investigation, Proceedings of the Royal Society B: Biological Sciences, vol.151, issue.4, 1738.
DOI : 10.1007/s00442-006-0612-z

URL : https://hal.archives-ouvertes.fr/hal-00671325

F. Bailleul, M. Authier, S. Ducatez, F. Roquet, J. Charrassin et al., Looking at the unseen: combining animal bio-logging and stable isotopes to reveal a shift in the ecological niche of a deep diving predator, Ecography, vol.201, issue.4, 2010.
DOI : 10.1007/s00300-004-0628-y

F. Bailleul, C. Cotté, and C. Guinet, Mesoscale eddies as foraging area of a deep-diving predator, the southern elephant seal, Marine Ecology Progress Series, vol.408, 2010.
DOI : 10.3354/meps08560

URL : https://hal.archives-ouvertes.fr/hal-00528567

F. Bailleul, J. Vacquie-garcia, and C. Guinet, Dissolved Oxygen Sensor in Animal-Borne Instruments: An Innovation for Monitoring the Health of Oceans and Investigating the Functioning of Marine Ecosystems, PLOS ONE, vol.321, issue.7, 2015.
DOI : 10.1371/journal.pone.0132681.s001

URL : https://hal.archives-ouvertes.fr/hal-01292634

I. M. Belkin and A. L. Gordon, Southern Ocean fronts from the Greenwich meridian to Tasmania, Journal of Geophysical Research: Oceans, vol.18, issue.26, pp.10-1029, 1996.
DOI : 10.1029/JC092iC06p06462

B. B. Benson and D. Krause, The concentration and isotopic fractionation of oxygen dissolved in freshwater and seawater in equilibrium with the atmosphere1, Limnology and Oceanography, vol.29, issue.3, pp.620-652, 1984.
DOI : 10.4319/lo.1984.29.3.0620

. Bock, R. W. Gee-woo, Y. Zmud, J. Kim, and . Lee, « Behavioral intention formation in knowledge sharing: Examining the roles of extrinsic motivators, socialpsychological forces, and organizational climate, pp.87-111, 2005.

L. Boehme, P. Lovell, M. Biuw, F. Roquet, J. Nicholson et al., Technical Note: Animal-borne CTD-Satellite Relay Data Loggers for real-time oceanographic data collection, Ocean Science, vol.5, issue.4, pp.685-95, 2009.
DOI : 10.5194/os-5-685-2009

URL : http://doi.org/10.5194/osd-6-1261-2009

B. J. Boeuf, Y. Le, T. Naito, D. Asaga, D. P. Crocker et al., Swim speed in a female northern elephant seal: metabolic and foraging implications, Canadian Journal of Zoology, vol.70, issue.4, pp.786-95, 1992.
DOI : 10.1139/z92-111

Y. Bras, J. Le, B. Jouma-'a, C. Picard, and . Guinet, How Elephant Seals (Mirounga leonina) Adjust Their Fine Scale Horizontal Movement and Diving Behaviour in Relation to Prey Encounter Rate, PLOS ONE, vol.3, issue.89, 2016.
DOI : 10.1371/journal.pone.0167226.s004

URL : https://hal.archives-ouvertes.fr/hal-01496986

J. F. Case, J. Warner, A. T. Barnes, and E. M. Lowenstine, Bioluminescence of lantern fish (Myctophidae) in response to changes in light intensity, Bioluminescence of Lantern Fish (Myctophidae) in Response to Changes in Light Intensity, pp.179-81, 1977.
DOI : 10.1002/jcp.1030630306

F. Cezilly, S. Et, and . Benhamou, « Optimal foraging strategies: a review ». Revue D Ecologie, pp.43-86, 1996.

A. Chaigne, M. Authier, P. Richard, Y. Cherel, and C. Guinet, Shift in foraging grounds and diet broadening during ontogeny in southern elephant seals from Kerguelen Islands, Marine Biology, vol.15, issue.2, pp.977-86, 2013.
DOI : 10.1017/S0954102003001202

P. Chambault, K. Benoît-de-thoisy, A. Heerah, S. Conchon, V. D. Barrioz et al., The influence of oceanographic features on the foraging behavior of the olive ridley sea turtle Lepidochelys olivacea along the Guiana coast, Progress in Oceanography, vol.142, 2016.
DOI : 10.1016/j.pocean.2016.01.006

URL : https://hal.archives-ouvertes.fr/hal-01298671

J. B. Charrassin, F. Roquet, Y. H. Park, F. Bailleul, C. Guinet et al., New Insights into Southern Ocean Physical and Biological Processes Revealed by Instrumented Elephant Seals, Proceedings of OceanObs'09: Sustained Ocean Observations and Information for Society, pp.21-25, 2009.
DOI : 10.5270/OceanObs09.cwp.15

URL : http://epic.awi.de/21346/1/Cha2009f.pdf

J. Cook, The Voyages of Captain James Cook, 1842.

D. E. Crocker, J. L. Burney, Y. Boeuf, T. Naito, D. P. Asaga et al., « Swim speed and dive function in a female northern elephant seal ». Elephant seals: Population ecology, behavior, and physiology, pp.328-370, 1994.

G. Daneri, Carlini. s. d. « Fish Prey of Southern Elephant Seals, Mirounga Leonina, at King George Island », Polar Biology, vol.25, issue.10, pp.739-782

G. E. Deacon and R. , The hydrology of the Southern Ocean, 1937.

. Dobricic, « Impact of data assimilation of glider observations in the Ionian Sea (Eastern Mediterranean) ». Dynamics of Atmospheres and Oceans 50: 78?92, 2010.

A. Dragon, A. Bar-hen, P. P. Monestiez, and C. Guinet, 2012. « Horizontal and vertical movements as predictors of foraging success in a marine predator, Marine Ecology Progress Series, vol.447

F. Durand and G. Reverdin, A Statistical Method for Correcting Salinity Observations from Autonomous Profiling Floats: An ARGO Perspective, Journal of Atmospheric and Oceanic Technology, vol.22, issue.3, 2005.
DOI : 10.1175/JTECH1693.1

URL : https://hal.archives-ouvertes.fr/hal-00280361

S. A. Eckert, W. David, K. L. Nellis, G. L. Eckert, and . Kooyman, « Diving Patterns of Two Leatherback Sea Turtles (Dermochelys coriacea) during Internesting Intervals at Sandy Point, St. Croix, U.S. Virgin Islands ». Herpetologica, vol.42, issue.3, pp.381-88, 1986.

M. Fedak, « Marine animals as platforms for oceanographic sampling: a ». Memoirs of National Institute of Polar Research, pp.133-180, 2004.

M. Fedak, P. Lovell, B. Mcconnell, and C. Hunter, Overcoming the Constraints of Long Range Radio Telemetry from Animals: Getting More Useful Data from Smaller Packages, Integrative and Comparative Biology, vol.42, issue.1, 2002.
DOI : 10.1093/icb/42.1.3

S. L. Fowler, P. Daniel, J. P. Costa, N. J. Arnould, C. E. Gales et al., Ontogeny of diving behaviour in the Australian sea lion: trials of adolescence in a late bloomer, Journal of Animal Ecology, vol.9, issue.79, pp.358-67, 2006.
DOI : 10.1007/978-3-642-76398-4_7

S. Gallon, F. Bailleul, J. Charrassin, C. Guinet, C. Bost et al., « Identifying foraging events in deep diving southern elephant seals, Mirounga leonina, using acceleration data loggers ». Deep Sea Research Part II: Topical Studies in Oceanography, Fourth International Symposium on Bio-logging Science, pp.88-89, 2013.
DOI : 10.1016/j.dsr2.2012.09.002

A. Gargett and T. Garner, Determining Thorpe Scales from Ship-Lowered CTD Density Profiles, Journal of Atmospheric and Oceanic Technology, vol.25, issue.9, pp.1657-70, 2001.
DOI : 10.1175/2008JTECHO541.1

J. Gjøsaeter, K. Et, and . Kawaguchi, A Review of the World Resources of Mesopelagic Fish, 1980.

S. A. Green and N. V. Blough, Optical absorption and fluorescence properties of chromophoric dissolved organic matter in natural waters, Limnology and Oceanography, vol.39, issue.8, pp.1903-1919, 1994.
DOI : 10.4319/lo.1994.39.8.1903

C. Guinet, P. Jouventin, and E. H. Weimerskirch, Population changes, movements of southern elephant seals on Crozet and Kerguelen Archipelagos in the last decades, Polar Biology, vol.12, issue.3-4, pp.10-1007, 1992.
DOI : 10.1007/BF00243106

C. Guinet, . Vacquié-garcia, . Picard, Y. Bessigneul, A. Lebras et al., Southern elephant seal foraging success in relation to temperature and light conditions: insight into prey distribution, Marine Ecology Progress Series, vol.499, 2014.
DOI : 10.3354/meps10660

URL : https://hal.archives-ouvertes.fr/hal-00998666

C. Guinet, X. Xing, E. Walker, P. Monestiez, S. Marchand et al., Calibration procedures and first dataset of Southern Ocean chlorophyll <i>a</i> profiles collected by elephant seals equipped with a newly developed CTD-fluorescence tags, Earth System Science Data, vol.5, issue.1, pp.10-5194, 2013.
DOI : 10.5194/essd-5-15-2013-supplement

S. H. Haddock, A. Mark, J. F. Moline, and . Case, « Bioluminescence in the Sea ». Review-article, 2009.

P. Hendriks, Why share knowledge? The influence of ICT on the motivation for knowledge sharing, Knowledge and Process Management, vol.6, issue.2, p.91, 1999.
DOI : 10.1016/B978-0-7506-9749-1.50014-4

M. A. Hindell, C. R. Mcmahon, M. N. Bester, L. Boehme, D. Costa et al., Circumpolar habitat use in the southern elephant seal: implications for foraging success and population trajectories, Ecosphere, vol.75, issue.89, 2016.
DOI : 10.1029/AR075p0001

URL : https://hal.archives-ouvertes.fr/hal-01328047

S. Johnsen, E. A. Widder, and C. D. Mobley, Propagation and Perception of Bioluminescence: Factors Affecting Counterillumination as a Cryptic Strategy, The Biological Bulletin, vol.207, issue.1, pp.1-16, 2004.
DOI : 10.2307/1543624

P. Knoppien, J. Et, and . Reddingius, Predators with two modes of searching: A mathematical model, Journal of Theoretical Biology, vol.114, issue.2, pp.10-1016, 1985.
DOI : 10.1016/S0022-5193(85)80107-7

G. L. Kooyman, Techniques used in measuring diving capacities of Weddell Seals, Polar Record, vol.12, issue.79, pp.391-394, 1965.
DOI : 10.1017/S003224740005484X

R. M. Laws, « The ecology of the Southern Ocean, American Scientist, vol.73, pp.26-40, 1985.

D. Levenson, R. J. Hendrik, and . Schusterman, Pupillometry in seals and sea lions: ecological implications, Canadian Journal of Zoology, vol.75, issue.12, pp.2050-57, 1997.
DOI : 10.1139/z97-838

E. Lewis, « The practical salinity scale 1978 and its antecedents, IEEE Journal of Oceanic Engineering, vol.5, issue.1, 1980.
DOI : 10.1109/joe.1980.1145448

J. N. Lythgoe and H. J. Et, A ???Deep Sea Rhodopsin??? in a Mammal, Nature, vol.145, issue.5261, 1970.
DOI : 10.1111/j.1096-3642.1956.tb00433.x

C. Martin, I. Bentaleb, S. Steelandt, and C. Guinet, Stable carbon and nitrogen isotope variations in??canine dentine growth layers of Kerguelen southern elephant seals, octobre): 295?305. doi, pp.10-3354, 2011.
DOI : 10.3354/meps09331

URL : https://hal.archives-ouvertes.fr/hal-00649619

«. Mathworks-makers-of, M. Simulink, and ». , Consulté le février 1. https, 2017.

T. Mcintyre, P. J. De-bruyn, I. J. Ansorge, M. N. Bester, H. Bornemann et al., A lifetime at depth: vertical distribution of southern elephant seals in the water column, Polar Biology, vol.274, issue.8, pp.10-1007, 2010.
DOI : 10.1152/ajpregu.00247.2009

C. R. Mcmahon, N. Marthan, H. R. Bester, M. A. Burton, C. J. Hindell et al., Population status, trends and a re-examination of the hypotheses explaining the recent declines of the southern elephant seal Mirounga leonina, Mammal Review, vol.81, issue.1, 2005.
DOI : 10.1016/S0169-5347(00)02062-0

C. Mcmahon, M. Hindell, H. Burton, . Et-mn, and . Bester, Comparison of southern elephant seal populations, and observations of a population on a demographic knife-edge, Marine Ecology Progress Series, vol.288, 2005.
DOI : 10.3354/meps288273

. Mensah, S. Vigan, M. Jan, Y. Chang, and . Yang, Intraseasonal to seasonal variability of the intermediate waters along the Kuroshio path east of Taiwan, Journal of Geophysical Research: Oceans, vol.31, issue.4, pp.5473-89, 2015.
DOI : 10.1175/1520-0485(2001)031<1054:TKEOTM>2.0.CO;2

. Mensah, S. Vigan, M. Jan, T. H. Chiou, . Kuo et al., « Evolution of the Kuroshio Tropical Water from the Luzon Strait to the East of Taiwan ». Deep Sea Research Part I: Oceanographic Research Papers, 2014.

M. P. Meredith, W. Keith, I. A. Nicholls, L. Renfrew, M. Boehme et al., « Seasonal evolution of the upper-ocean adjacent to the South Orkney Islands, Southern Ocean: Results from a " lazy biological mooring " ». Deep Sea Research Part II, Topical Studies in Oceanography, vol.58, pp.13-16, 2011.

R. Millard, J. Toole, and E. M. Swartz, A fast responding temperature measurement system for CTD applications, Ocean Engineering, vol.7, issue.3, pp.10-1016, 1980.
DOI : 10.1016/0029-8018(80)90007-4

Y. Mitani, R. D. Andrews, K. Sato, A. Kato, Y. Naito et al., Three-dimensional resting behaviour of northern elephant seals: drifting like a falling leaf, Biology Letters, vol.152, issue.8, pp.163-66, 2010.
DOI : 10.1016/S0149-7634(00)00039-7

J. Morison, R. Andersen, N. Larson, E. D. Asaro, and T. Boyd, The Correction for Thermal-Lag Effects in Sea-Bird CTD Data, 011<1151:TCFTLE>2.0.CO, pp.10-1175, 1994.
DOI : 10.1175/1520-0426(1994)011<1151:TCFTLE>2.0.CO;2

Y. Naito, D. P. Costa, T. Adachi, P. W. Robinson, M. Fowler et al., Unravelling the mysteries of a mesopelagic diet: a large apex predator specializes on small prey, Functional Ecology, vol.209, issue.Suppl. 6, pp.710-727, 2013.
DOI : 10.1242/jeb.02505

W. D. Nowlin, M. Et-john, and . Klinck, The physics of the Antarctic Circumpolar Current, Reviews of Geophysics, vol.19, issue.15, pp.10-1029, 1986.
DOI : 10.1029/AR019p0011

A. H. Orsi, T. Whitworth, and W. D. Nowlin, « On the Meridional Extent and Fronts of the Antarctic Circumpolar Current ». Deep Sea Research Part I: Oceanographic Research Papers, pp.641-73, 1995.

Y. Park, F. Roquet, I. Durand, and J. Fuda, « Large-scale circulation over and around the Northern Kerguelen Plateau ». Deep Sea Research Part II, Topical Studies in Oceanography, vol.55, 2008.
DOI : 10.1016/j.dsr2.2007.12.030

R. Pawlowicz, « M_Map: A mapping package for Matlab ». University of British Columbia Earth and Ocean Sciences, 2000.

A. Poisson, « Conductivity/salinity/temperature relationship of diluted and concentrated standard seawater, IEEE Journal of Oceanic Engineering, vol.5, issue.1, 1980.
DOI : 10.1109/joe.1980.1145442

G. Reverdin, S. Morisset, J. Boutin, and E. N. Martin, Rain-induced variability of near sea-surface T and S from drifter data, C2): C02032. doi:10.1029, 2012.
DOI : 10.1175/2007JCLI1714.1

URL : https://hal.archives-ouvertes.fr/hal-00756488

Y. Ropert-coudert, A. Kato, K. Sato, Y. Naito, J. Baudat et al., Swim speed of free-ranging Adelie penguins Pygoscelis adeliae and its relation to the maximum depth of dives, Journal of Avian Biology, vol.202, issue.1, 2002.
DOI : 10.1086/285409

Y. Ropert-coudert and R. P. Wilson, Trends and perspectives in animal-attached remote sensing, Frontiers in Ecology and the Environment, vol.3, issue.8, 2005.
DOI : 10.1890/1540-9295(2005)003[0437:TAPIAR]2.0.CO;2

F. Roquet, J. Charrassin, S. Marchand, L. Boehme, M. Fedak et al., Delayed-Mode Calibration of Hydrographic Data Obtained from Animal-Borne Satellite Relay Data Loggers, Journal of Atmospheric and Oceanic Technology, vol.28, issue.6, pp.10-1175, 2001.
DOI : 10.1175/2010JTECHO801.1

URL : https://hal.archives-ouvertes.fr/hal-00624609

F. Roquet, G. Williams, M. A. Hindell, R. Harcourt, C. Mcmahon et al., « A Southern Indian Ocean database of hydrographic profiles obtained with instrumented elephant seals ». Scientific Data 1 (septembre), 2014.

C. Rutz and G. C. Hays, New frontiers in biologging science, Biology Letters, vol.4, issue.2, 2009.
DOI : 10.1152/jn.00879.2005

URL : http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2679933

J. Sala, F. Emilio, R. P. Quintana, J. Wilson, M. N. Dignani et al., Pitching a new angle on elephant seal dive patterns, Pitching a New Angle on Elephant Seal Dive Patterns, pp.1197-1209, 2011.
DOI : 10.1111/j.1469-7998.2007.00371.x

K. Sato, K. Shiomi, Y. Watanabe, Y. Watanuki, A. Takahashi et al., Scaling of swim speed and stroke frequency in geometrically similar penguins: they swim optimally to minimize cost of transport, Proceedings of the Royal Society B: Biological Sciences, vol.63, issue.2, 1682.
DOI : 10.1098/rspb.2006.0005

D. J. Slip, A. Mark, H. R. Hindell, and . Burton, « Diving behavior of southern elephant seals from Macquarie Island: an overview ». Elephant seals: population ecology, behavior, and physiology, 1994.

I. Suzuki, Y. Naito, L. P. Folkow, N. Miyazaki, S. Et-arnoldus et al., Validation of a device for accurate timing of feeding events in marine animals, Polar Biology, vol.204, issue.2, pp.667-71, 2009.
DOI : 10.1007/s00300-009-0596-3

L. D. Talley, Introduction to Descriptive Physical Oceanography, 2011.
DOI : 10.1016/B978-0-7506-4552-2.10001-0

J. A. Tracey, J. Sheppard-zhu, F. Wei, R. R. Swaisgood, and R. N. Fisher, « Movement-Based Estimation and Visualization of Space Use in 3D for Wildlife Ecology and Conservation ». Édité par Cédric Sueur, PLoS ONE, vol.9, issue.7, 2014.

J. R. Turner, E. M. White, M. A. Collins, J. C. Partridge, and R. H. Douglas, « Vision in lanternfish (Myctophidae): Adaptations for viewing bioluminescence in the deep-sea ». Deep Sea Research Part I: Oceanographic Research Papers, 2009.

V. Garcia and J. , « Variation spatio-temporelle de l'activité d'alimentation des éléphants de mer en relation avec les paramètres physiques et biologiques de l'environnement ». Phd, 2014.

J. Vacquié-garcia, F. Royer, A. Dragon, M. Viviant, F. Bailleul et al., Foraging in the Darkness of the Southern Ocean: Influence of Bioluminescence on a Deep Diving Predator, PLoS ONE, vol.7, issue.8, 2012.
DOI : 10.1371/journal.pone.0043565.t001

M. A. Vanderklift, . Et-sergine, and . Ponsard, Sources of variation in consumer-diet ?15N enrichment: a meta-analysis, Oecologia, vol.136, issue.2, 2003.
DOI : 10.1007/s00442-003-1270-z

C. Vincent, B. J. Mcconnell, V. Ridoux, and M. A. Fedak, ASSESSMENT OF ARGOS LOCATION ACCURACY FROM SATELLITE TAGS DEPLOYED ON CAPTIVE GRAY SEALS, Marine Mammal Science, vol.224, issue.2, 2002.
DOI : 10.1007/978-1-4757-3121-7

M. Viviant, A. W. Trites, D. A. Rosen, P. Monestiez, and C. Guinet, Prey capture attempts can be detected in Steller sea lions and other marine predators using accelerometers, Polar Biology, vol.140, issue.5, 2009.
DOI : 10.1007/s00300-009-0750-y

URL : https://hal.archives-ouvertes.fr/hal-00528158

Y. Watanuki, Y. Niizuma, W. G. Geir, K. Sato, and E. Y. Naito, Stroke and glide of wing-propelled divers: deep diving seabirds adjust surge frequency to buoyancy change with depth, Proceedings of the Royal Society B: Biological Sciences, vol.270, issue.1514, 1514.
DOI : 10.1098/rspb.2002.2252

R. P. Wilson, A. R. Et-cairns, and . Bain, An Inexpensive Depth Gauge for Penguins, The Journal of Wildlife Management, vol.48, issue.4, 1984.
DOI : 10.2307/3801769

M. Baptiste-sallée, B. Authier, F. Picard, and . Roquet, Frédéric Bailleul, Mark Hindell,Jean-Benoit Charrassin Progress in Oceanography