They are actually more related to dolphins than whales.
Not all whales, but Killer Whales can, and have eaten Polar Bears. Polar Bears are one of the many animals that Killer Whales eat. See related links below for others.
A Killer Whale IS an Orca
NO
Yes
Killer whales are very tough animals with incredibly strong jaws. Animals that attack it will be very lucky to survive.
the endangered sea animals are killer whales blue whales etc
seals dolphins fish and other whales
They are a family of animals called "Cetaceans".
A Large Dolphin
Killer whales
Please see the related link below, for a great picture of a killer whales tale.
Yes, killer whales are very strong. stronger than a white shark or other bigger sea animals