WEBVTT

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So for those of you who've just
joined us, welcome to dive

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twelve of the NOAA Ocean
Exploration expedition, North

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Atlantic Stepping Stones.
Today, we're diving on a

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previously unmapped and unnamed
seamount. It's been nicknamed

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by us the Y sea mount due to a
little feature upon its top

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that looks a little like a Y.
Because this particular area

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has been unmapped and
unexplored before, we're seeing

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this for the very first time
today and so uh we're gonna

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document biology and geological
features along the way. If you

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look just at the lower part of
the screen, maybe a feeding

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trace there. Is that what I'm
seeing all that black on the um

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on the rock? Yes, that might
be. I think I see a white ball

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at one point there in the upper
left. So, several scientists in

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the chat room are saying that
this is Emarginula fissura which

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is in the genius Diodora. These
are otherwise known as slit

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limpets. Wow. Really unusual. A
great observation. Yeah, I mean

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that's gotta be what's making
that feeding trace. It's um you

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know, it would have a radula, which is a hard protein
rasping tongue. It's full of

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spines. Think of your tongue.
If you're able to extend your

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tongue out of the mouth and
oppress it against the surface

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and then scrape it back and
forth like sandpaper and then

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scrape up whatever bacteria or
other stuff is growing there.

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This is a really unusual
observation in the deep sea and

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it would be uh really
fascinating to learn what

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species this is or or even
describe a new species if it

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is. A great discovery.