UW News

Anitra Ingalls


January 18, 2017

Vitamin B-12, and a knockoff version, create complex market for marine vitamins

instrument over ocean

Vitamin B-12 exists in two different, incompatible forms in the oceans. An organism thought to supply the essential vitamin B-12 in the marine environment is actually churning out a knockoff version.


August 26, 2015

Lab experiments question popular measure of ancient ocean temperatures

The study looked at Thaumarchaeota archaea, which are found throughout the world's oceans. These single-celled organisms have just one membrane sac that encloses their bodies. This organism, used in the study, was collected from a tropical-water tank at the Seattle Aquarium.

The membranes of sediment-entombed archaea are an increasingly popular way to determine ocean surface temperatures back to the age of the dinosaurs. But new results show that changing oxygen can affect the reading by as much as 21 degrees C.


February 24, 2014

Vitamin water: Measuring essential nutrients in the ocean

researchers on boat

Oceanographers have found that archaea, a type of marine microbe, can produce B-12 vitamins in the ocean.