male Pacific walrus (O. r. divergens)

wild caught in 1992

deceased ≥ 1994

Ancestors and Descendants

No known related animals.

Transfer History

  1. capture 1992 in Russia

  2. transfer 1992-Nov to Dolfinarium Harderwijk

  3. death ≥ 1994 at Dolfinarium Harderwijk

Physical Data

The dates listed here generally represent the time at which the measurements were published, not necessarily the date on which they were taken.


  • 1993-Feb: 116 kg · 255 lb

  • 1993-Mar: 125 kg · 275 lb

  • 1993-May: 188 kg · 414 lb

  • 1993-Aug: 182 kg · 401 lb

  • 1994: 323 kg · 712 lb


  • 1994: 224 cm · 7 ft 4 in


"The animals were fed on formula 3 times a day (at 09.30, 12.30 and 15.45 hours). The formula consisted of the following ingredients: 13 l water, 270 g butter, 540 g oatmeal, 630 g soya flour (Nutrilonsoja®), 900 g milk powder (Multimilk®), and 8 g marine mammal vitamins (Seavit®). The formula was stirred and boiled, then cooled to below 37°C."

  • 1993: 12,000 ml per day

Image Gallery

No images available at this time.



Notes and Information

This walrus was estimated to have been born in May or June of 1992, and died at some point during or after 1994 from a tooth infection.

He had been diagnosed with Addison's disease, which reduced his growth hormone production.


  • 1996. R.A. Kastelein et al. Drinking speed of Pacific walrus (Odobenus rosmarus divergens) pups. Retrieved from Aquatic Mammals Journal.

  • 2000-Jan. R. A. Kastelein et al. Food consumption and body weight of captive Pacific walruses (Odobenus rosmarus divergens). Retrieved from researchgate.net [archive]

  • 2007-May. R. A. Kastelein et al. Feeding enrichment methods for Pacific walrus calves. Retrieved from researchgate.net.

  • 2007-Dec. R. A. Kastelein et el. Food consumption, growth and food passage times in Pacific Walrus. Retrieved from researchgate.net.