In Part IV of this podcast, I described how sea ice forms and traps marine algae that can grow in the ice before it’s released back into the ocean when the ice melts. This process drives marine productivity in Antarctica starting with krill, a small crustacean that is a keystone species there. In this episode, the life cycle of krill is described and why it is so important in the marine food web. The rich diversity of benthic invertebrates also is presented and the current threat to this community by the invasion of king crabs from South America. A unique group of ice fish also is described and how these species evolved in isolation in Antarctica in waters at less than 5 degrees C. These fish can withstand freezing temperatures and some absorb oxygen from the water directly through their skin.
Popular Podcasts
Stuff You Should Know
If you've ever wanted to know about champagne, satanism, the Stonewall Uprising, chaos theory, LSD, El Nino, true crime and Rosa Parks, then look no further. Josh and Chuck have you covered.
Dateline NBC
Current and classic episodes, featuring compelling true-crime mysteries, powerful documentaries and in-depth investigations. Follow now to get the latest episodes of Dateline NBC completely free, or subscribe to Dateline Premium for ad-free listening and exclusive bonus content: DatelinePremium.com
The Male Room with Dr. Jesse Mills
As Director of The Men’s Clinic at UCLA, Dr. Jesse Mills has spent his career helping men understand their bodies, their hormones, and their health. Now he’s bringing that expertise to The Male Room — a podcast where data-driven medicine meets common sense. Each episode separates fact from hype, science from snake oil, and gives men the tools to live longer, stronger, and happier lives. With candor, humor, and real-world experience from the exam room and the operating room, Dr. Mills breaks down the latest health headlines, dissects trends, and explains what actually works — and what doesn’t. Smart, straightforward, and entertaining, The Male Room is the show that helps men take charge of their health without the jargon.