This otter exhibit is one of the better enclosures in the children's section.
An excerpt from my 2011 review:
Discovery Outpost: Children's Zoo – This is one of the weakest areas of the zoo for me, particularly after visiting some really cool, interactive kid zoos during the past few years. Here the cages for an ocelot (badly pacing), a fennec fox, red pandas, meerkats, Goeldi’s marmosets, pygmy marmosets, macaws, a fossa, mice, North American river otter/spot-necked otter, thick-billed parrot, collared loris, a kea, toe-toed sloth, Indian crested porcupines, naked mole rats and an echidna range from mediocre to borderline terrible, even though some of those animals are used in shows. This zone needs to be freshened up, but the small insect section (18 terrariums) is quite well done and the highlight of the area. There is a little theater for daily shows (the new Camp-themed show is definitely weak as I watched some of it while I was in Reptile Mesa) but for a zoo of San Diego’s stature the children’s section is hugely disappointing.