Sandmaargh

Sandmaarghs are enemies introduced in Super Mario 3D Land. They are a variant of Magmaargh that live in sand instead of lava.

Super Mario 3D Land
In Super Mario 3D Land, they appear in desert themed levels where they will follow Mario or Luigi while hiding under the sand and when they get close enough, they pop out and attempt to bite down on them. If the Sandmaargh fails at biting the player, the Sandmaarghs can be attacked by having the player jump on their heads or by having the player swing their Tanooki Tail directly at the Sandmaargh. While underground, their shadows can be seen above ground, thus allowing the player to see where they are hidden and watch their movements. Sandmaarghs first appear in World 3-1, and also appear in World 5-1 and Special 6-1.

Mario & Luigi: Paper Jam
Sandmaarghs appear in Mario & Luigi: Paper Jam as enemies in Doop Doop Dunes. Like a few other enemies, they have no paper counterparts. If a bro gets eaten by one in the overworld, the battle starts with the Sandmaargh eating the bro causing a lot of damage to him. In combat, the Sandmaargh attacks by inhaling. The target has to use his hammer to knock away the obstacles in his attempt to escape, as hitting one causes the victim to get pushed into the creature's mouth. Sandmaarghs also appear in the Paper Toad Tailgate and Paper Toad Trail Trials missions, in which Mario and co. must jump at the right time before they come out of the sand while rescuing the Paper Toads, otherwise they will eat one.

Mario Golf: Super Rush
Sandmaarghs appear in Balmy Dunes in Mario Golf: Super Rush, where they now appear in a massive size. They also appear to be made out of sand, just as how Magmaarghs are made out of lava, as balls can be shot into them, although doing so results in a stroke penalty.