CASCADE LOCKS, Ore. - In his way, C404 is kind of cute, with those sea-lion whiskers, soft brown eyes and furry little head. But to many he is a sea lion either from hell _ or from Harvard. C404 has driven the U.S. Army Corps of Engineers at Bonneville Dam to near distraction as he and his ilk sit at the base and munch salmon gathered to continue upriver to spawn. Numerous sea lions head for the dam each spring, but C404 is in a class by himself. He has figured out how to get into fish ladders that help...