Peninsula Clarion: While there are many risky outdoor activities on the Kenai Peninsula, clamming typically isn't one of them. But last month a family from Palmer found out that even shoveling for shellfish can be dangerous, if proper attention is not paid to the surroundings. Melissa Briggs and family were busy digging on a Ninilchik sandbar and didn't notice the incoming tide had cut them off from the beach. After a harrowing battle with swirling water and mud, the family was helped ashore by passers-by with four-wheelers.