Polar Bears

in hive-153349 •  2 months ago  (edited)

Were you aware that polar bears are not actually white?

Fact. Their color is determined by lighting and the climate of their surroundings. Polar bears can come in all types of colors: yellow, gray, orange, and even green. That's because polar bear fur is transparent and hollow, so when light strikes the outer fur some of it is absorbed while the rest is deflected. Consequently, the fur can appear as different colors under different lighting. Normally, polar bears look white. That's because their fur is scattering sunlight, which is also white. But on a cloudy day, the bears can look slightly gray. At sunset, they can even appear reddish-orange.

v05q3e.jpg

Polar bears in zoos have even been known to turn green. This happens when concrete floors in their pens scrape against the fur and the abrasions create small holes in their hairs, opening a means for algae to live and breed inside. In the Arctic, temperatures are too cold for algae. But wild polar bear fur can even change color to yellow due to oils from their prey that stain their fur.

The most surprising thing about polar bears is that underneath all that hair, their skin is actually black. Black skin readily absorbs sunlight to keep the bear warm.

jq1ia1.jpg

Polar bears aren't just the ambassadors of the North Pole. They are masters at manipulating color to survive.

(source http://www.businessinsider.com/what-color-is-polar-bear-fur-2017-12)

The first photo is my entry to @photofeed's contest

Images taken with Samsung Galaxy S7 Edge
©2020 Nina Haskin. All rights reserved

l6n5a5.jpg


Thank you for taking time to stop by and visit my blog. I truly appreciate everyone's continued support! Stay safe & keep healthy, friends!

u8gadn.gif

PHC-Footer-05.gif

image

image


Proud member of

@steemitbloggers @thealliance @steemusa @qurator


Authors get paid when people like you upvote their post.
If you enjoyed what you read here, create your account today and start earning FREE STEEM!
Sort Order:  

pixresteemer_incognito_angel_mini.png
Bang, I did it again... I just rehived your post!
Week 17 of my contest just started...you can now check the winners of the previous week!
2

pixresteemer_incognito_angel_mini.png
Bang, I did it again... I just rehived your post!
Week 17 of my contest just started...you can now check the winners of the previous week!
!BEER
3

You need to stake more BEER (24 staked BEER allows you to call BEER one time per day)

Congratulations @ninahaskin! You have completed the following achievement on the Hive blockchain and have been rewarded with new badge(s) :

You distributed more than 16000 upvotes. Your next target is to reach 17000 upvotes.

You can view your badges on your board And compare to others on the Ranking
If you no longer want to receive notifications, reply to this comment with the word STOP

Do not miss the last post from @hivebuzz:

Feedback from the last Hive Power Up Day
Hive Power Up Day - Let's grow together!

Yay!
Your post has been boosted with Ecency Points. Keep up the good work!
Dear reader, Install Android: https://android.ecency.com, iOS: https://ios.ecency.com mobile app or desktop app for Windows, Mac, Linux: https://desktop.ecency.com
Learn more: https://ecency.com
Join our discord: https://discord.me/ecency