Send a Tweet
Most Popular Choices
Share on Facebook 1 Share on Twitter Printer Friendly Page More Sharing
Exclusive to OpEdNews:
Sci Tech   

Daily Inspiration — Lungfish

By       (Page 1 of 1 pages)     (# of views)   No comments, In Series: Daily Inspiration
Follow Me on Twitter     Message Josh Mitteldorf
Become a Fan
  (43 fans)
- Advertisement -

Life evolved in the sea (so we think) and moved much later to land. For 160 million years, there were fish in the sea, but no vertebrates on land.

Lungfish were a narrow bridge from the water to the land. A bottleneck from the vast diversity of fish to the equally vast diversity of amphibians, reptiles, mammals and birds. Lungfish moved to the land about 370 million years ago, but remarkably, there are still a few lungfish hanging around. They live in Australia, South America and Africa.

lungfish1sm
Copyrighted Image? DMCA

- Advertisement -

Lungfish are fully equipped with gills, and breathe in the water like any self-respecting fish. In addition, they are equipped for dry spells. Maybe the pond where they lives dries up during the summer, and they burrow into the mud to tough it out. Their fins look a bit like legs, so they can waddle around on land. They have air sacs--primitive lungs--that let them breathe air during this time. Remarkably, when they are in air-breathing mode, their gills don't work. You can drown a lungfish if you immerse it in water without sufficient time to re-acclimate!

Berkeley Biology article

 

- Advertisement -

Rate It | View Ratings

Josh Mitteldorf Social Media Pages: Facebook page url on login Profile not filled in       Twitter page url on login Profile not filled in       Linkedin page url on login Profile not filled in       Instagram page url on login Profile not filled in


Josh Mitteldorf, a senior editor at OpEdNews, blogs on aging at http://JoshMitteldorf.ScienceBlog.com. Read how to stay young at http://AgingAdvice.org.
Educated to be an astrophysicist, he has branched out from there to mathematical (more...)
 

Related Topic(s): , Add Tags
Add to My Group(s)
Go To Commenting
The views expressed herein are the sole responsibility of the author and do not necessarily reflect those of this website or its editors.
Follow Me on Twitter     Writers Guidelines
Contact AuthorContact Author Contact EditorContact Editor Author PageView Authors' Articles
Support OpEdNews

OpEdNews depends upon can't survive without your help.

If you value this article and the work of OpEdNews, please either Donate or Purchase a premium membership.

STAY IN THE KNOW
If you've enjoyed this, sign up for our daily or weekly newsletter to get lots of great progressive content.
Daily Weekly     OpEdNews Newsletter
Name
Email
   (Opens new browser window)
 

Most Popular Articles by this Author:     (View All Most Popular Articles by this Author)

Artificial Earthquakes

Cold Fusion: Tangible Hope in an Age of Despair

New Scientific Study: Smoking Gun Evidence of 9/11 Explosives in WTC Dust

PayPal cuts off Bradley Manning Legal Defense; Backs Off under Grass Roots Pressure

Daily Inspiration — Suppressed Science