To paraphrase J.R.R. Tolkien’s famous words in The Lord of the Rings, “It’s a dangerous business, clicking on a link. You glance at a story, and if you don’t watch out, there’s no knowing where you might be swept off to.”
This week I innocently clicked on a link to this story from the American Association for the Advancement of Science (AAAS).
In turn, that link led to this research study that was just published in Nature last week.
Indeed, the articles provided an interesting explanation for those odd polynya phenomena in Antarctica, but it was actually this intriguing image that really grabbed my attention.
Credit: Dan Costa/University of California, Santa Cruz
Yep, that’s a seal with an antenna on it’s head!
It turns out that the study used data combined from satellite images of sea ice cover, some robotic drifters as well as elephant seals outfitted with sensors.
What’s more, using seals wasn’t a one-off operation. It was part of a program that’s been operating for over a decade according to the Coriolis Operational Oceanography site:
Since 2004, several hundred seals have been equipped with conductivity-temperature-depth (CTD) sensors in the Southern Ocean for both biological and physical oceanographic studies. A calibrated collection of seal-derived hydrographic data is now available from Coriolis, currently consisting of more than 300,000 temperature/salinity profiles. — Coriolis
The Coriolis site also has information about a program called Marine Mammals Exploring the Oceans Pole to Pole that provides access to an international database of validated ocean observations collected by marine mammals such as seals, sea lions, and even turtles.
You can find out more about the program here.
MEOP Web Portal: Ocean Observations by Marine Mammals (Argos System)
On my journey to learn how scientists have been strapping sensors to seals to find out about what’s going on under the ice in Antarctica, it was impossible to miss stories about other methods they are using.
For example, here’s a story where an evolutionary biologist named Paul Cziko explains how they setup something called the McMurdo Oceanographic Observatory (MOO).
Spoiler alert. This time it’s humans diving way down under the ice. Burrrr!
KGW News (YouTube Channel)
KGW News (Official Website)
Yes, you really can go to the MOO site and listen in on some seals and ice for yourself.
After all of this stuff about seals, why stop with listening? Aren’t you itching to see some more?
Here’s a link to a short 360° video that takes you under an iceberg to visit with a crabeater seal along with some gentoo penguins before returning to the surface to share some other views and perspectives about Antarctica.
360° Diving Under Icebergs With A Seal In Antarctica (BBC Earth, YouTube)
That video had a nice view of a seal under ice, but now here’s an even better 360° video that get’s you up close and personal with an elephant seal on a beach.
Wildlife Protection Solutions (YouTube Channel)
Wildlife Protection Solutions (Official Website)
So there you have it. The moral of this story is be careful about what you click on, or you might find yourself on an unexpected virtual journey to learn about seals with sensors, and then end up spending an hour or more exploring the frigid waters under Antarctica.
In case you’ve got a few more minutes and the interest, here are links to two more very nice YouTube videos about the amazingly diverse and beautiful life deep under the Antarctic ice.
The Deepest Dive in Antarctica Reveals a Sea Floor Teeming With Life (OceanX, YouTube)
Discovering Life Under Antarctica’s Ice (Great Big Story, YouTube)
Finally, now that I’ve got you down here with me on this unexpected adventure in Antarctica, the trip wouldn’t be complete without some more penguins, right?
Here’s a 360° close-up view of a colony of some Adélies, chinstraps and gentoos — some of them are having a rough time, but nonetheless, they’re all still fun to watch (esp. the chicks).
PBS News Hour (YouTube Channel)
PBS News Hour (Official Website)
Have a great weekend!
Find out more about seals, penguins and Antarctica …