What is a ctenophore?

Ctenophores, commonly known as comb jellies, are marine invertebrates belonging to the phylum Ctenophora. They are characterized by their gelatinous bodies and distinctive rows of cilia, or "combs," which they use for locomotion. Ctenophores are typically transparent and can exhibit bioluminescence, with some species being capable of capturing prey using specialized tentacles. They play a role in marine ecosystems as both predators and prey.