Hydrothermal Vents: Earth’s Natural CO2 Bubbles

Fish seen swimming around the hydrothermal vent site.

To continue the baja-palooza currently being celebrated on the blog, here are some Cortez Angelfish who were swimming together in southern Bahia Concepcion, Baja.  This site was particularly interesting because of a hydrothermal vent bubbling up carbon dioxide through the sediment.  It did not seem to affect the fish community as there were many others such as a scorpion fish and Pacific Porgys.  It was a little strange to feel like you are diving inside a giant soda bottle.

CO2 Bubbles rise through the sediment and into the water from below.

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2 Responses to Hydrothermal Vents: Earth’s Natural CO2 Bubbles

  1. David Crea says:

    You are PRESUMING this gas is CO2, unless you have some analytical proof. It would seem more-likely to me this was actually methane, CH4, which is a common gas seeping-out of underlying carbonaceous deposits. And Coal Mines and just the land in general over sedimentary carbonaceous deposits which are shallow and not TIGHTLY-capped by overlying layers. For instance, in this area of ‘upstate’ New York, many farmers who drill a ‘water well’ down perhaps 2-300 feet can get enough deliberately-captured methane to heat the farmstead, I am told by a retired Cornell U. EE professor/native whom I drink coffee with. And PA is ‘notable’ for its CH4 in water wells issues, now that you’ve got the ‘fringe’ claiming it MUST be from ‘fracking’ (but is known to other locals to have “always been there”). DAC


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