Killer Whale, is a species of friend dolphin in Abyssrium.
To unlock Killer Whale is necessary to have Star Horn Coral, and at least 75 total friends.
2 Killer Whales are required to fuse a False Killer Whale, along with 70 clams, 60 crabs and 50 krill.
Killer whales are not really whales, but dolphins, so they're sometimes referred as orca. They're the most widely distributed cetaceans being found in all world, despite having a preference for cold waters. They have a fearsome reptuation because they're apex predators feeding mainly in big fish, sharks, and even whales, but they can be very pacific, and according to studies looking directly at a killer whale's eye will will make it a friend for life. They're also very popular in shows, performing numerous stunts.