Conus nigra

The shape of black snails

The background color of conus nigricans (scientific name: dendroconus figurinus) ranges from cream yellow to grayish brown, with many brown thin spirals and thick shell. It has a shell and a pipe trench. The nervous system is concentrated, the esophageal nerve ring is located behind the salivary gland, and the gastrointestinal ganglion is located near the brain nerve center. The mouth is well developed and the esophagus has unpaired glands. Part of the mantle is rolled up to form a water pipe. It is hermaphroditic, and the male has a commissure. The olfactory apparatus was feathery with narrow tongue. It is a typical tropical species and inhabits in the sand from intertidal zone to 20 meters deep. Carnivorous, feeding on worms, fish or other mollusks. There are poison glands in the body, which can kill prey and harm predators. It is distributed from the Indian Ocean to the Western Pacific Ocean.
It is distributed from the south of Japan to the Indo Western Pacific Ocean. Taiwan's black cones are distributed in suhai and Yilan near the South Australia sea, Taitung County Green Island, Orchid Island, Kaohsiung County, near the waters of Donggang, Pingtung Donggang, Dongsha Islands.
It is a tropical shellfish, like to live in warm water, inhabit in the intertidal zone ~ 20 meters deep in the sand. Usually, they are ambush in the daytime and emerge at night. They usually eat meat and feed on other mollusks, worms and small fish. The venom sac in the body of the conus snail is transmitted through a poison tube to the toothed tongue which turns into an arrow. When prey approaches, it sticks out its snout and stabs its venomous tongue into the prey. The tooth tongue of taro snail will be broken every time it is used, and it will take some time to grow out again. The smaller the shell, the stronger the toxicity.
The meat is edible, and the shell is made up of various colors. It is beautiful in shape and can be viewed and valued.