The mola molas body is generally oval in shape , but the rear termination is vertically straighter than the more rounded head . Its body is strongly compressed . The long, tapered dorsal and anal fins emerge from the top and bottom of the rear half of the body. The tail, or caudal fin, is narrow and runs the full height of the body, almost connecting to the dorsal and anal fins. Its contour follows that of the body and is scalloped at the end. Some biologists do not consider this a true fin and refer to it instead as a �clavus . Molas do not have pelvic fins.
These fish have a small,round mouth at the end of the snout. Their teeth consist of heavy, hard, fused plates similar to those in their distant relatives, the puffers . On each side behind and slightly above the mouth is a small, round eye, followed by a small oval-shaped opening through which water from the gill cavity exits, and a small, rounded pectoral fin.
The color of these fish varies but usually runs from tan to gray or sliver becoming somewhat lighter on the belly. The mola�s skin is very heavy and in large specimens, may exceed 10.2 cm in thickness. It is covered by a layer of tiny, bony tubercles , similar to that of sharkskin in appearance and feel. The entire fish is covered with a heavy layer of thick mucus which is thought to provide protection from infection .