Cod (Gadus), also known as sole fish, is one of the main edible fish. Cod is native to the cold waters of the North Atlantic from northern Europe to Canada and the eastern United States. At present, the main producers of cod are Canada, Iceland, Norway and Russia, and Japan is mainly in Hokkaido. Cod is one of the largest fish caught every year in the world and has important economic value. Some big supermarkets sell cod, which is a deep-sea fish.

1, the sea rabbit is not a squid. Sea rabbit, a kind of snail, is the general name of marine gastropods of the family Lycopodidae, also known as sea slugs.

2. Sea rabbits are not rabbits. The two pairs of antennae on the head of the sea rabbit protrude like rabbit ears, and the body is smooth or has many protrusions. The antenna has a clear division of labor, and the front pair is slightly shorter, specializing in touch control; The back couple is a little longer.

3. When the sea rabbit crawls on the bottom of the sea, the rear pair of tentacles are separated into a figure of eight, which stretches forward obliquely to smell the surrounding smell. When resting, the pair of tentacles immediately get together and go straight up, just like the two long ears of a rabbit. When not moving, it looks like a small white rabbit squatting on the ground, with a pair of big ears, so it was first called a sea rabbit by the Romans. After being recognized by the world, the sea rabbit got its name. The Japanese call it "Rain Tiger".