A ctenophore, also known as a comb jelly, is a marine invertebrate belonging to the phylum Ctenophora. It is characterized by its unique comb-like rows of cilia, called ctenes, that span the length of its body, which are used for locomotion and as a means of capturing prey. Ctenophores are typically transparent and gelatinous, with a fragile and delicate body structure.
Ctenophores can be found in oceans worldwide, inhabiting both shallow coastal waters and deep-sea environments. They possess a simple body plan, with a spherical or elongated shape, and some species exhibit bioluminescence, creating a mesmerizing display of pulsating lights.
These organisms possess radial symmetry, with several distinct variations in body shape and size among different species. They possess a central mouth that leads into a digestive system, which is often highly branched and allows for efficient digestion. Unlike other similar marine organisms, such as jellyfish, ctenophores lack stinging cells and instead capture their prey by using their sticky tentacles.
Ctenophores are known for their ability to regenerate lost body parts, which is an exceptional feat among animals. They primarily feed on small planktonic organisms, such as fish eggs, larvae, and crustaceans. Ctenophores also play a significant role in marine ecosystems as both predator and prey, contributing to the transfer of energy through the food chain.
In summary, ctenophores or comb jellies are marine invertebrates characterized by their gelatinous and transparent bodies, comb-like rows of cilia, and radial symmetry. They exhibit diversity in body shape, possess a unique feeding mechanism, and are renowned for their regenerative abilities.
