Some starfish can appear square, but this is extremely rare and usually not a normal species. Most starfish have five arms and radial symmetry, yet genetic mutations or developmental problems can disrupt this pattern. Injuries followed by uneven regeneration can also distort their shape. In some cases, a type called cushion starfish naturally looks more rounded or blocky, which can resemble a square. Want more interesting content like this ? Follow gravitonomy :) Via : Kathy Pennell No copyright infringement intended. Kindly DM for Removal :) #starfish #science #biology #marinebiology #zoology