Why Antarctic fish don’t freeze to death?

Why Antarctic fish don’t freeze to death
Credit: ACS.

Fish living in the oceans around Antarctica seem like they should freeze to death.

But notothenioids have it all figured out, thanks to the antifreeze proteins in their blood!

The notothenioid fishes that inhabit the Antarctic Ocean have evolved an unusual adaptation to living in icy waters.

Their blood contains antifreeze proteins that prevent ice from growing within the fishes’ bodies and actually lower the freezing temperature of their tissues.

In this video, Reactions meets these bizarre animals:

Reactions is a video series produced by the American Chemical Society and PBS Digital Studios.

The American Chemical Society, the world’s largest scientific society, is a not-for-profit organization chartered by the U.S. Congress.

ACS is a global leader in providing access to chemistry-related information and research through its multiple databases, peer-reviewed journals and scientific conferences.

ACS does not conduct research, but publishes and publicizes peer-reviewed scientific studies. Its main offices are in Washington, D.C., and Columbus, Ohio.

Source: American Chemical Society.