Crab that can climb 13-foot-high walls found in Pacific Northwest for 1st time / Hungry little crabs may help control coral-eating starfish numbers / California loves Dungeness crab. But concerns over whale safety put industry in peril / Dungeness crab and red abalone among most climate-threatened species in California's coastal waters / Video: Volunteers use sonar to find, remove cast-away crab pots / Green crabs have invaded habitats. Sea otters might be the solution. / California researchers find sea otter population helps stop invasion of green crabs / Hong Kong customs seizes 1.3 tonnes of meat, live crabs in crackdown on food smuggling / Millions of red crabs take over Australian island in annual spectacle / Many Marylanders, conservationists worry winter crabbing puts Chesapeake Bay at risk