Hope this answers your question!
Ctenophores (pronounced teen-uh-fours), or comb jellies. Very simple creatures that exhibit a trait called bioluminescence (they glow). They glow a greenish-blue when disturbed, which can only be seen in the dark. The glowing parts are their gonads, and are pretty much the only thing that are distinguishable from the rest of the jelly's clear body. The gonads are iridescent in daylight, but comb jellies do not hold their structure well at all if taken out of the water. If you try to hold one, it just kinda looks like you sneezed in your hand. Ctenophores are not that closely related to jellyfish. They are in their own phylum. They are carnivorous and are good food for sea turtles, jellyfish, and some fish, even though they are made of mostly water. I guess it's like people eating celery...
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