Do sharks ever attack or try to attack whales?
Only sick, dead or dying whales. A shark doesn't wanna fight a fair fight, it wants an easy meal.
yes they do
yes it is used as a self defense mechanism or the shark is looking for food it also depends on the type of shark
Yes they do, and its even been reported that killer whales even attack and eat great white sharks as well.
Sharks don't look for fights, but if they're sick or desperate for food, they will go for the abnormal things. This is the case with humans, although we can sometimes, to a shark, be mistaken for another animal.
Yep hurt ones only