I have no information on how many walruses this facility has housed. I have thus far only seen a single animal in footage from 1981, as well as an image of a walrus said by the park to have been housed there in the "mid-70s". I am not certain at this time whether these two sources show the same individual or not.
This facility no longer houses walruses, although in 2010 they expressed interest in constructing an exhibit for their zoo in the future. A conceptual layout for the park displayed in 2015 included space for a walrus exhibit within an "Arctica" area.