male walrus (O. rosmarus)

wild caught ≥ 1991

living at Yokohama Hakkeijima Sea Paradise

Ancestors and Descendants

No known related animals at this time.

Transfer History

  1. capture ≥ 1991 in wild

  2. transfer ≥ 1991 to Yokohama Hakkeijima Sea Paradise

Image Gallery

Notes and Information

I have no exact information on this individual's age. A source from July 2016 references him as being 25, and a sign outside their exhibit in 2013 stated simply that the pair were both in their early 20s.

There is a significant possibility that Seita is the same animal as a 1990 pup imported to Izu-Mito Sea Paradise from the Moscow Zoo. That pup, alongside its herdmate (who is also possibly the same individual as Seita's herdmate, Uchi), were transferred together to Hakkeijima on April 22nd, 1993, prior to the facility's opening the following month. The unknown individuals were last confirmed alive on April 28th, 1997.


  • 1989. Nakajima, Kayama, & Kamiya. タイヘイヨウセイウチの形態学的研究。Retrieved from

  • 1989. Nakajima, Kayama, & Kamiya. タイヘイヨウセイウチの臨床・剖検記録。Retrieved from