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That was a ctenophore and you
can see that there was this

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iridescent rainbow effect
coming from it and that is due

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to the comb rows and they're rows
of cilia that they use to

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create propulsion. It's a very
different sort of motion from

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the Solmissus jellyfish which
has this wide bell that it

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contracts and forces water out
like jet propulsion. So the

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jellyfish is an cnidarian.

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The ctenophore, it's an own
phylum and there's a lot of

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interesting research going on
right now to understand are the

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ctenophores evolved after the
jellyfish and so represent kind

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of an advancement in complexity,
body complexity, or did the ctenophores

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evolve before the
jellyfish closer related to the

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sponges in which case we've had
independent evolutions of

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things like nervous systems and
so on. It's a really

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fascinating field of research.

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I love seeing that in a way it
uses a muscular pulses to move

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when we're teaching about
ctenophores we're always talking

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about how it just uses the
ctenes the cilia to propel

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itself but this group clearly
does more than that.