Wang Chao called "Watching Tide" is a famous aquatic product in the East China Sea. In fact, it is an octopus cub, living in a mud pit on the beach. Watching the tide in seclusion can accurately realize the time when the tide rises and falls, thus gaining this reputation! Octopus is regarded as the scientific name of tide watching, and it is a small octopus with a body length of 15 to 27 cm. Its trunk is oval or spherical. Cochineal insects have dense granular protrusions on their backs. Each wrist is short, roughly equal in length and nearly twice as long as the brain. There is a faint spindle-shaped or half-moon plaque between the eyes on the back, and an oval golden circle in front of the eyes. Wrist sucker 2 rows, tan, thick back, light abdomen.