Wow. A huge slab of concrete, ten foot high iron bars, and a pool of water. I'm sure that there are some quality exhibits at Hannover Zoo, but many of the photos (walrus, penguin, orangutan, black rhino, etc) make the zoo look horrible.
The walrusses are dead, the last one died last yaer in an age of probably 30 ywars...In the sevnties, this pool was used for the walrus pair and a adult pair of southeren elephants seals. Together with them, not in change....