A comb jelly, scientifically known as ctenophore, refers to a marine invertebrate that belongs to the phylum Ctenophora. Despite the name, a comb jelly is not an actual jellyfish, but a distinct group of gelatinous, transparent organisms found mainly in saltwater environments. These creatures derive their name from the presence of rows of cilia, known as combs, which they use for locomotion through rhythmic beating motions, resembling the action of a comb moving through hair.
Comb jellies exhibit a wide range of shapes, sizes, and colors; however, most are gelatinous and transparent, allowing light to pass through their bodies, creating an ethereal appearance. They possess a radially symmetric body, with a sac-like structure known as the cydippid that houses the mouth, digestive system, and reproductive organs. The combs are evenly arranged along their body and serve as both locomotor and sensory organs.
These marine organisms are predominantly carnivorous, feeding on a diet that consists of small plankton, including fish eggs, small crustaceans, and other comb jellies. The comb jellies use specialized cells called colloblasts to capture their prey. These cells contain adhesive threads that are discharged upon contact, entangling and immobilizing their victims.
Comb jellies play a vital role in marine ecosystems as both predator and prey. They contribute to the cycling of nutrients by consuming small organisms and being a valuable food source for larger marine creatures. In addition to their ecological significance, comb jellies are of scientific interest due to their unique anatomy, reproductive strategies, and bioluminescent capabilities. Despite their delicate appearance, comb jellies have been able to thrive across a wide range of marine habitats, making them
