Ctenophora (if included)

Ctenophora, commonly known as comb jellies, are marine animals characterized by their soft, gelatinous bodies and rows of tiny, hair-like structures called cilia that they use for movement. Unlike jellyfish, they typically have a pair of retractable, bioluminescent tentacles for capturing prey. Ctenophores are transparent and can produce light, creating beautiful displays in the ocean. They play a role in marine ecosystems as predators of small plankton and help maintain ecological balance. Despite their delicate appearance, ctenophores are efficient swimmers and an important part of ocean biodiversity.