Solution:
Ctenophora is special because it's a unique group of animals in the ocean. They're often called "comb jellies" because they have rows of tiny hairs that look like combs. What makes them stand out is that they use these combs to swim with beautiful rainbow-like lights. They are the largest animals that move by using these light-producing cells called bioluminescence. Unlike other animals, Ctenophora don't have stinging tentacles like jellyfish, and they have a simple body structure.

So, what's special about them is their beautiful, light-producing swimming and their different way of living in the sea.
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