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Aquatic Mammals, Volume 9(3), 69-82
An experiment in two-way communication in Orcinus orca L.
Authors: Dudok van Heel, W. H., Kamminga, C., & van der Toorn, J. D.

Aquatic Mammals, Volume 9(3), 83-94
Haematology and plasma chemistry of captive Baikal seals Pusa sibrica
Authors: Ronald, K., & Kay, J.

Aquatic Mammals, Volume 9(3), 95-104
Investigations on cetacean sonar v. the true nature of the sonar sound of Cephalorhynchus commersonii
Authors: Kamminga, C., & Wiersma, H.