Ctenophores, also known as comb jellies, are a group of marine invertebrates that belong to the phylum Ctenophora. They are known for their unique appearance and their ability to propel themselves through the water using rows of cilia, which give them a comb-like appearance.
Ctenophores are found in oceans all over the world, from the surface waters to the deep sea. They come in a variety of shapes and sizes, ranging from small, transparent organisms to larger, more colorful species. Some ctenophores are bioluminescent, meaning they can produce their own light.
Unlike jellyfish, ctenophores do not have stinging cells, or nematocysts. Instead, they capture their prey using sticky cells called colloblasts, which are located on their tentacles. When a ctenophore comes into contact with its prey, it releases a sticky substance that immobilizes the prey, allowing the ctenophore to bring it towards its mouth.
Ctenophores play an important role in marine ecosystems as both predators and prey. They feed on small planktonic organisms, such as copepods and other small invertebrates, and are in turn consumed by larger predators, including fish and sea turtles.
Despite their ecological significance, ctenophores are still not well understood. Scientists continue to study these fascinating creatures to learn more about their biology, behavior, and their role in marine ecosystems.