Small Urchin

A Mini Urchin is a shrimp sub-species of Urchin that first appears in the game New Super Mario Bros. 2.

New Super Mario Bros. 2
Mini Urchins only appear in World 3, and unlike regular Urchins and Mega Urchins, they only stand still. Mini Urchins might want to be defeated with a Fire Flower, Gold Flower, or Star.