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Marine Chemistry & Geochemistry


Oxygen Dead Zones

Low-oxygen “dead zones” and phytoplankton blooms

Dead zones occur when the water lacks oxygen. Like us, marine animals require oxygen to breathe, and when oxygen levels drop too low they can suffocate.

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An aquatic outbreak

Leslie Henderson and Blake Gardner, divers with the C.O.R.E. St. Croix Coral Strike Team, use syringes to apply an amoxicillin paste to a section of affected pillar coral off the coast of St. Croix. (Photo by Jason Quetel, © VI-DAC)

Stony coral tissue loss disease continues devastating Caribbean reefs. Here’s what we know about it so far

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