Sea shell

Shells are a plentiful items that wash up on the ocean shoreline of all three Animal Crossing games. They are an easy (if small) source of Bells, and are especially useful the first few days to obtain enough Bells to buy tools such as the Fishing Rod or Net.

Animal Crossing: City Folk shells
The shells in this game are the same as those in Wild World, and sell for the same price. Additionally, Scallops can be traded with Pascal for a piece of ship-themed furniture.