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far out in the remote northwestern 
Pacific Islands formed by an ancient

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volcano rise out of this scene a very 
very hard to reach its very remote it's

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E 500 miles from the nearest population 
center so it gets very few visitors it

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was quite drastic but really when I was 
really impressed

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these islands of MOG and uninhabited 
paradise near the northern tip of the

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Mariana Islands margaritas unlike any 
other place I've ever been

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world you're in the middle of absolutely 
nowhere and you come to what works from

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a distance just like an island and then 
you see that it's a big volcanic crater

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essentially and you able to set sail 
inside and it all of a sudden becomes

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not just this big roiling Pacific but 
almost this lake inside the ocean black

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home very pleasant with these big walls 
rising up around you and that innocent

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love itself is the special music

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used to be a volcano that was above the 
water but there was a large eruption at

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some point and the whole top of the 
volcano collapsed down and it left this

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ring of three islands around that have 
openings big enough to drive a ship into

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and it's about a mile and a half across 
so it's pretty good sized caldera inside

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within this caldera are unspoiled coral 
reefs coral overseas investors

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there's areas where almost a hundred 
percent coral coverage and just filled

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so coral and most pristine reefs could 
imagine

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but what makes these waters of 
particular interest to scientists is

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what else can be found beneath the 
surface

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you can jump in the water dive down 
thirty feet and feel that the ground

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there is actually hot and you've got 
this hot water coming out and gas

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bubbles heard someone say that it's like 
diving champagne absolutely is not an

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exaggeration it's pretty amazing 
volcanic gases are typically dominated

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by co2 so when we heard that there were 
gas bubbles coming out within the coral

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reef area something clicked and said hey 
this is an opportunity to go look at how

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organic co2 might be affecting coral 
reef commuters and use it as an analog

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to what's going on in the bigger ocean

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the chemistry of seawater is changing 
throughout the world's oceans since the

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dawn of the Industrial Revolution human 
activities have increased the amount of

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co2 that is released into the atmosphere 
the oceans naturally absorb a percentage

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of atmospheric carbon dioxide every year 
as the levels of co2 increase in the

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atmosphere more of it will be taken up 
by the oceans as well

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and this causes essentially on lower pH 
and a more acidic conditions so this

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creates a situation where it's harder 
for corals any other organism that forms

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a calcium carbonate ur heart skeleton to 
actually lay down those skeletons into

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calcified this is known as ocean 
acidification one of several effects

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elevated levels of co2 is having on the 
world's oceans

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it's predicted to severely impact coral 
reefs in the future

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we could use this local volcanic 
activity to stay that process in an

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experiment that sort of set up by nature 
forest where the volcano is putting co2

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into the water and affecting the 
chemistry and if conditions were right

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we could possibly use that to study how 
ocean acidification might affect coral

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reefs in the future