What animal belongs to the group called Annelida?

Annelida is a phylum of invertebrate animals that includes segmented worms such as earthworms, leeches, and tube worms. These animals are characterized by their segmented bodies, which are made up of many repeating units called somites. Each somite contains a pair of coelomic cavities, which are fluid-filled spaces that help to support the animal's body and provide space for its internal organs. Annelids also have a well-developed circulatory system, which helps to distribute nutrients and oxygen throughout their bodies.

Earthworms are one of the most common types of annelids. They are found in moist soils all over the world, and they play an important role in the decomposition of organic matter. Earthworms burrow through the soil, and they eat dead leaves, plants, and other organic material. As they digest this material, they release nutrients into the soil, which helps to make the soil more fertile.

Leeches are another type of annelid. They are found in freshwater and saltwater habitats, and they feed on the blood of other animals. Leeches have a sucker at one end of their bodies, which they use to attach themselves to their prey. They then use their teeth to cut through the skin of their prey, and they suck out the blood.

Tube worms are a type of annelid that lives in tubes. These tubes are made of calcium carbonate, and they help to protect the worms from predators. Tube worms are found in a variety of habitats, including coral reefs, hydrothermal vents, and the deep ocean.