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Aquatic Mammals, Volume 15(1), 3-5
The excavation technique for molluscs of Pacific walruses (Odobenus rosmarus divergens) under controlled conditions
Authors: Kastelein, R. A., & Mosterd, P.

Aquatic Mammals, Volume 15(1), 6-8
The use of molluscs to occupy Pacific walruses (Odobenus rosmarus divergens) in human care
Authors: Kastelein, R. A., Wiepkema, P. R., & Slegtenhorst, C.

Aquatic Mammals, Volume 15(1), 9-17
A digging trough as occupational therapy for Pacific walruses (Odobenus rosmarus divergens) in human care
Authors: Kastelein, R. A., & Wiepkema, P. R.

Aquatic Mammals, Volume 15(1), 18-21
Food consumption, body measurements and weight changes of a female killer whale (Orcinus orca)
Authors: Kastelein, R. A., & Vaughan, N.

Aquatic Mammals, Volume 15(1), 22-26
Underwater click hearing thresholds of a harbour seal, Phoca vitulina
Author: Terhune, J. M.

Aquatic Mammals, Volume 15(1), 27-37
Feeding, aerial and play behaviour of the bowhead whale, Balaena mysticetus, summering in the Beaufort Sea
Authors: Würsig, B., Dorsey, E.M., Richardson, W.J. & Wells, R.S.