Super Mario Bros. DS (New SMB?) World 2 First Star Coin Location

Assuming New Super Mario Bros. (DS) World 2:

World 2-1 (First Level) – Star Coin 1

1. Start level. Move right.
2. After first pipe gap, see Green Pipe (enterable) on ground level.
3. Enter → Underground area.
4. Run right, jump over gaps. Star Coin floating above bricks near end of underground section. Jump or ground-pound bricks to reach.
5. Exit pipe → Continue level.

General Star Coin Tips (NSMB DS)

• 3 per level. Unlock Worlds 9 & Mushroom Worlds.
• Use Mini Mario (Blue Shell) for tiny gaps.
• Ground Pound (Down + Jump in air) breaks bricks from above.
• Wall Jump reaches high coins.

If you meant Super Mario 64 DS or Mario & Luigi – specify. For NSMB DS, YouTube "NSMB DS World 2 Star Coins" shows exact frames.