Hey I just wanted to let everyone know that the yellowish-white variant is very common for polar bears because the yellow coloring comes from the oil seals produced and when I say polar bears eat seals, they eat seals. Another thing is that the algae variant is actually unnatural and occurs in captivity. Often the bear water is cold while the habitat is very warm. The colder water means bears are gonna be resting in it constantly. The fact that it isn't arctic cold while the habitat is warm causes lots of algae to grow and grow on the bear since it's so constantly in the water. Bears in the wild don't spend very much time in the water and when they do most of that time is active swimming. So yeah keep this in mind when using the variant in your zoo. It's not a very good sign so if that matters then there ya go.
Edit: Another reason why they really need their cold natural habitat is that their fur is designed to insulate their heat + dark skin to absorb heat. They are so good at staying warm that during the summer they are often seen burying themselves in snow so that they can cool off. And that's just in the wild so imagine in captivity.
This is really cool knowledge, in captivity, polar bears are indeed yellow, perhaps due to an unnatural diet? But many of them actually have some white mixed in their hair, and even a little green (it should be algae)
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Another thing is that the algae variant is actually unnatural and occurs in captivity. Often the bear water is cold while the habitat is very warm. The colder water means bears are gonna be resting in it constantly. The fact that it isn't arctic cold while the habitat is warm causes lots of algae to grow and grow on the bear since it's so constantly in the water. Bears in the wild don't spend very much time in the water and when they do most of that time is active swimming. So yeah keep this in mind when using the variant in your zoo. It's not a very good sign so if that matters then there ya go.
Edit: Another reason why they really need their cold natural habitat is that their fur is designed to insulate their heat + dark skin to absorb heat. They are so good at staying warm that during the summer they are often seen burying themselves in snow so that they can cool off. And that's just in the wild so imagine in captivity.