Scale confounds the modern wildlife-watcher here. Consider the sea otter, a common Resurrection Bay resident. From afar, it appears kitten-soft and cat-sized -- a furry log, rolling on the waves. Really, it is impressively hefty, reaching 5 feet and weighing about 70 pounds. A Steller sea lion bull grows to an average 8 feet long and weighs about 1,500 pounds.