sponges and some cnidarians do not move from place to place

Sponges, along with some cnidarians, have a unique characteristic - they are non-motile, meaning they do not move from one place to another. This is in contrast to many other animals that exhibit various forms of body symmetry, such as radial, bilateral, or spherical symmetry.

Unlike most animal organisms, sponges do not possess any type of body symmetry. Instead, they are asymmetric and often found attached to rocks or other hard surfaces, where they can filter food and water through their porous bodies. Sponges typically feed on bacteria, algae, and other tiny organisms in the water, using the circulating water to facilitate gas exchange and food filtration.

One of the most fascinating features of sponges is their varied shapes, which range from tube-like and barrel-like structures to fan-like and cup-like forms. These unique shapes are designed to optimize water flow through the sponge's pores, allowing it to filter food and nutrients as the water passes through. Some giant sponges can reach impressive heights of up to seven feet, while others may be tiny, measuring only two-thousandths of an inch.

Sponges can be found in a variety of habitats, including both marine and freshwater environments, at depths ranging from shallow waters to the deep sea. They come in a range of colors, sizes, and shapes, making each one unique and fascinating in its own way. Overall, sponges are remarkable creatures that have adapted to their environment in ways that are both functional and fascinating.

Sponges and some cnidarians do not move from place to place