Comb jellies are quite beautiful organisms, existing in an array of ethereal shapes. At night or in darkened water they are even more impressive. The rows of cilia are bioluminescent , creating a glowing underwater rainbow. Most have either one or two pairs of retractable tentacles that assist in catching food. Their diet is similar to that of the jellyfish.
Ctenophores consume zooplankton, small fish, jellyfish, and other comb jellies.
Some comb jellies are more selective about their diet, only hunting and eating a certain type of organism. Very little is known about the comb jellies and their life cycle, although it is known that most Ctenophores do not go through an alternating life cycle. Instead, after hatching into a larval form the young develop directly into the adult form.