they don't
They have always lived there, and so have evolved to that climate.
It's difficult to know for certain... Killer whales are incredibly smart, thus I think they would adapt, but the killer whales use ice as a way to catch prey, so in a gist there current life style would be ruined.
They Hunted whales, walruses, and seals. They developed the kayak.
They Hunted whales, walruses, and seals. They developed the kayak.
There is only one terrestrial invertebrate that lives on the Antarctic continent. It is the Antarctic midge -- Belgica Antarctica. From its Wikipedia entry: "To adapt to the cold temperatures, B.antarctica accumulates trehalose, glucose and erythritol."When the occasional bug is imported in logistical movements, the animal dies for lack of food and/or from extreme cold.
All these animals' food chains are based in liquid water, which is always warmer than the ambient air around Antarctica.
If fish populations in the Antarctic were to decline, smaller toothed whales could adapt by shifting their diet to include alternative prey, such as squid or krill, which may still be abundant. They might also alter their foraging strategies, utilizing different hunting techniques or exploring new feeding grounds. Additionally, these whales could adjust their social structures and migratory patterns to optimize foraging opportunities in response to changing prey availability.
They have to adapt to different things. For example, they have to adapt to lack of food (krill mostly) and the change in the ocean ecosystem including the warming of oceans. This is because of excess climate change which is caused mostly by Human activity.
by countershading
The type of food a killer whale eats depends on the type of killer whale(orca) resident orcas usually eat smaller pray such as fish and live in one area. transient orcas are travelling orcas and need to adapt to different food types so they basically eat anything they can get: seals, dolphins, otters even larger whales like gray whales!
Adapt.
beacause they have fur