What the Fish? Episode 20: Under the Ice

The Blood Runs Cold!

On February 15, 2013 a fireball exploded over the Chelyabinsk district of Russia. The shock wave caused significant damage and injuries to many in the area. This meteor was the largest object to fall on Earth in almost 100 years, with an estimated mass of about 11,000 metric tons. On April 9, The Field Museum received several pieces of the Chelyabinsk Meteorite totaling about two pounds thanks to a generous donation from meteorite collector Terry Boudreaux. Many Antarctic icefishes, such as species in the suborder Notothenioidei, frequently live in water that range in temperature from –2°C to 4°C due in part to the evolution of an antifreeze glycoprotein that is found in their blood, with many species in this group possessing little to no hemoglobin in their bloodstream. Much of the biodiversity that is found in the Southern Ocean are thought to be highly susceptible to potential long term changes in climate over time, icluding phytoplankton, and fishes.

Questions?

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So long, and thanks for all the fish!

Fish Nerds Podcast Team:

Eric Ahlgren (Fishes Volunteer)

Leo Smith (Assistant Curator of Fishes)

Matthew P. Davis (Postdoctoral Research Scientist)

Beth Sanzenbacher (Outreach Coordinator)

Science Focus: 
Exhibit: 
Design for a Living World