The cuttlefish bone is about 30 mm long. Wrists are about the same length, and the suction cups of each wrist are about the same size. There are irregular blunt small teeth on the outer edge of the horny ring. The wrist is slightly longer than the trunk, and the ear of the wrist is half-moon-shaped, with about 10 rows of suction cups on it.
The trunk is oval, and its length can reach 20 cm, which is about 1.5 times of its width. When living, the body is yellow-brown, with purple-brown spots and white spots on the back of the trunk, and wavy stripes on the back of the male trunk.
There is a mouth in the center of the front of the extended data, and there are 4 pairs of wrists and 1 pairs of touch wrists on the front. Wrists are radially arranged around the mouth, with the same length, and there are 4 rows of suction cups inside, as well as the outer edge of its horny ring.
Small teeth with sharp cones; The stem of the fourth wrist on the left side of the male becomes the reproductive wrist. The length of the wrist is generally longer than the length of the trunk; The wrist ear is narrow, about 40 mm long, and there are about 20 rows of suction cups on it.
The ventral side of the head has 1 funnel. The chest is oval, with a length of 157mm (back) and a width of about 65mm. Both sides are fleshy fins; There are 1 gland holes on the ventral surface of trunk.
There are obvious white spots on the back of the trunk when living. There is a calcium oval inner shell of 1 in the center of the back of the outer coat cavity, and there is no bone needle at the back end. There is an ink sac near the anus. Habitat on the seabed; When encountering an enemy, the ink bag will release ink to cover itself. Carnivorous. It is distributed along the coast of China.
Baidu Encyclopedia-cuttlefish bone