The basking shark, a fish the size of a London bus, used to appear off the BC coast every spring. During World War II, the fish became a nuisance to commercial nets and fishing trollers. Gliding just below the surface, the basking shark was an easy target for a new pest eradication program that touted killing one of the "plankton-eating monsters" as great sport. By 1970, the basking shark was virtually eradicated in BC. Now researchers Scott Wallace...