Nellie the Sea Otter stacks cups at Point Defiance Zoo & Aquarium Nellie is a well-trained sea otter at Point Defiance Zoo & Aquarium in Tacoma, Washington. Watch her practice a special cup stacking enrichment and demonstrate trained behaviors with her pal, Abra. Plan a visit to see sea otters Nellie, Abra, Homer, Kaladi and Libby - along with E.T. the walrus - at Point Defiance Zoo & Aquarium. Learn more at http://www.pdza.org.