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Ichii, T., Mahapatra, K., Sakai, M., Inagake, D. and Okada, Y. (2004): Differing body size between the autumn and the winter-spring cohorts of neon flying squid (Ommastrephes bartramii) related to the oceanographic regime in the North Pacific: a hypothesis. Fish. Oceanogr., 13: 1-15.

Itoh, S., Uehara, K., Miyao, T., Miyake, H., Yasuda, I., Watanabe, T. and Shimizu, Y. (2004): Characteristics of altimetry SSH anomaly of TOPEX/POSEIDON on the OICE and its relation for measured velocity and transport in the Oyashio region. J. Oceanograph., 60: 425-437.

Kitagawa, T, Kimura, S, Nakata H. and Yamada, H. (2004): Diving behavior of immature, feeding Pacific bluefin tuna (Thunnus thynnus orientalis) in relation to season and area:the East China Sea and the Kuroshio-Oyashio transition region. Fish. Oceanogr., 13: 161-180.

Kitagawa, T, Kimura, S, Nakata H. and Yamada, H. (2004): Overview of research on tuna therma-physiology using electric tags. Mem. Natl Inst. Polar Res., special issue (58): 69-79.

Matsuoka, K., Ensor, P., Hakamada, T., Shimada, H., Nishiwaki, S., Kasamatsu, F. and Kato, H. (2004): Overview of minke whale sightings survys conducter on IWC/IDCR and SOWER Antarctic cruises from 1978/79 to 2000/01. J. Cetacean Res. Manage., 5: 173-201.

宮下富夫 (2004): 鯨類の目視調査法の現状と課題. 哺乳類科学, 44 (1): 97-101.

Nakagawa, Y., Ota, T., Endo, Y., Taki, K. and Sugisaki, H. (2004): Importance of ciliates as prey of the euphausiid Euphausia pacifica in the NW North Pacific. Mar. Ecol. Prog. Ser., 271: 261-266.

Sakai, M. (2004): Interpretation of stalith microstructure in reared hatchling paralarvae of the squid Illex argentinus. Mar. Freshwat. Res., 55: 403-413.

Satoh, K. (2004): Occurrence of Phronima sedentaria (Forskal, 1775) (Amphipoda, Hyperiidea) in the stomach of the longnose lancetfish, Alepisaurus ferox (Lowe, 1833) (Aulopiformes, Alepisauroidei) in the North and tropical Atlantic Ocean. Crustaceana, 77 (6): 729-740.

Shimizu, Y., Miyao, T., Yasuda, I., Itoh, S., Watanabe, T., Uehara, K., Shikama, N. and Nakano, S. (2004): North Pacific intermediate water formation process traced by 26.7 sigma-theta isopycnal floats. J. Oceanogr., 60: 453-462.

Shiomoto, A., Hashimoto, S. and Kameda, T. (2004): Chlorophyll a and primary production in the northwestern Pacific Ocean, July 1997. La mer, 41: 214-224.

Uehara, K., Itoh, S., Miyake, H., Yasuda, I., Shimizu, Y. and Watanabe, T. (2004): Absolute volume transports for the Oyashio referred to mooring current meter data crossing the OICE. J. Oceanograph., 60: 397-409.

Watanabe, H., Kubodera, T., Masuda, S. and Kawahara, S. (2004): Feeding habits of albacore Thunnus alalunga in the transition region of the central North Pacific. Fish. Sci., 70: 573-579.

Yonezaki, S., Kiyota, M., Baba, N., Koido, T. and Takemura, A. (2004): An enema technique to collect dietary infromation from northern fur seals (Callorhinus ursinus) at sea. Aquatic Mammals, 30 (2): 284-288.

Yoshida, T., Toda, T., Hirano, Y., Matsuda, T. and Kawaguchi, S. (2004): Effect of temperature on embryo development time and hatching success of the Antarctic krill Euphausia superba in the laboratory. Mar. Fresh Behav. Physiol., 37: 137-145