Corals
in sentence
128 examples of Corals in a sentence
We were looking for corals, deep sea
corals.
If you take a branch from one of these
corals
and polish it up, this is about 100 microns across.
And we pick up all these corals, bring them back, we sort them out.
So we use a laser to analyze uranium and one of its daughter products, thorium, in these corals, and that tells us exactly how old the fossils are.
This beautiful animation of the Southern Ocean I'm just going to use illustrate how we're using these
corals
to get at some of the ancient ocean feedbacks.
We've collected
corals
from back and forth across this Antarctic passage, and we've found quite a surprising thing from my uranium dating: the
corals
migrated from south to north during this transition from the glacial to the interglacial.
I'm going to illustrate what I think we've found about climate from those
corals
in the Southern Ocean.
We collected little fossil
corals.
We think back in the glacial, from the analysis we've made in the corals, that the deep part of the Southern Ocean was very rich in carbon, and there was a low-density layer sitting on top.
We then found
corals
that are of an intermediate age, and they show us that the ocean mixed partway through that climate transition.
And then if we analyze
corals
closer to the modern day, or indeed if we go down there today anyway and measure the chemistry of the corals, we see that we move to a position where carbon can exchange in and out.
So this is the way we can use fossil
corals
to help us learn about the environment.
There are fossils in amongst, and now I've trained you to appreciate the fossil
corals
that are down there.
Some corals, on the other hand, have no symmetry at all.
For biologists, this is strong evidence that we're more closely related to starfish than we are, to say, corals, or other animals that don't exhibit bilateral symmetry at any stage in their development.
And my gateway into this world of biofluorescence begins with
corals.
And I want to give a full TED Talk on
corals
and just how cool these things are.
We're making an exhibit for the Museum of Natural History, and we're trying to show off how great the fluorescent
corals
are on the reef, and something happened that just blew me away: this.
In the middle of our corals, is this green fluorescent fish.
So I had to put down my
corals
and team up with a fish scientist, John Sparks, and begin a search around the world to see how prevalent this phenomenon is.
And fish are much more interesting than corals, because they have really advanced vision, and some of the fish even have, the way that I was photographing it, they have lenses in their eyes that would magnify the fluorescence.
And I was like, "Maybe I should go back to corals."
Some
corals
could be 1,000 years old.
Here, you're looking at a living brain that's using the DNA of fluorescent marine creatures, this one from jellyfish and corals, to illuminate the living brain and see its connections.
Another example are
corals.
These are cold-water
corals.
And did you know we actually have cold-water
corals
in Irish waters, just off our continental shelf?
It's projected that by the end of this century, 70 percent of all known cold-water
corals
in the entire ocean will be surrounded by seawater that is dissolving their coral structure.
The last example I have are these healthy tropical
corals.
I was studying these
corals
for my PhD, and after days and days of diving on the same reef, I had gotten to know them as individuals.
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