Arctic ice: Has polar bears but no penguins
Antarctic ice: Has penguins but no polar bears.
If a polar bear should ever get the bright idea to hunt penguins it will either have to swim from the icy edge of the North Atlantic way up north all the way to the icy edge of the South Atlantic all the way down south. Alternatively a similar journey through Berings Strait, North Pacific to South Pacific (saying Aloha to Hawaii about Midway down before passing the equator).
The Arctic ice sheet is ocean ice with lots of water beneath.
The Antarctic ice sheet is mostly on top of a lot of land (very hard to navigate for submarines), the parts that are out in the ocean is often the edges of glaciers being pushed out and being several hundred if not thousand feet thick.
There are areas with ice sheets similar to the Arctic ice but I do not know if nuclear submarines waste their time going there. Their targets are on the northern hemisphere so they tend to lurk there, attack submarines also look for their targets in the waters up north.

A Polar Bear would be more realistic, looking wishfully at that submarine and thinking about FOOD .....

;)
/ Robin

WARNING!!! Many of the penguins pictured here appear to be unclothed. If you suspect illegal penguin trafficking report the details to local law enforcement immediately!

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Arctic ice: Has polar bears but no penguins
Antarctic ice: Has penguins but no polar bears.
If a polar bear should ever get the bright idea to hunt penguins it will either have to swim from the icy edge of the North Atlantic way up north all the way to the icy edge of the South Atlantic all the way down south. Alternatively a similar journey through Berings Strait, North Pacific to South Pacific (saying Aloha to Hawaii about Midway down before passing the equator).
The Arctic ice sheet is ocean ice with lots of water beneath.
The Antarctic ice sheet is mostly on top of a lot of land (very hard to navigate for submarines), the parts that are out in the ocean is often the edges of glaciers being pushed out and being several hundred if not thousand feet thick.
There are areas with ice sheets similar to the Arctic ice but I do not know if nuclear submarines waste their time going there. Their targets are on the northern hemisphere so they tend to lurk there, attack submarines also look for their targets in the waters up north.

A Polar Bear would be more realistic, looking wishfully at that submarine and thinking about FOOD .....

;)
/ Robin

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Robin,
So what about the Russian k19 submarine? Didn't they break through the Antarctic ice? If,that's the case then there should be penquins,is that correct?

Penguins nest on land and catch fish in the oceans. I don't know if a penguin would venture so far onto thinner ice that it could meet a submarine which has breached the ice.

The other thing to bear in mind is that when penguins are nesting, they split into two groups...

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The other thing to bear in mind is that when penguins are nesting, they split into two groups...

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https://imgur.com/gallery/v5pOkeg

I'm not sure that's the best way to do it.