Frequent strandings of humpback whales seem to be caused by
malnutrition.
I can see various ways in which effects of global heating could be
contributing to this. For instance, it the whales giving birth could
have moved away from the equator for the temperature and perhaps there
is not enough to eat in the place they have moved to.
This is a hunch, not a certainty. The certainty is that global
heating will mess up lots of ecosystems.
Polar bears in the area around Svalbard are having
1/3
as many cubs as usual. Probably because receding ice has made it
hard for them to find food.