Orca

Here's some fun facts about Killer Whales:

1. They're not whales at all, they're actually the largest dolphin.
2. They'll stay with their mother their entire life.
3. They use echolocation, a form of undersea "radar" to navigate and find food.
4. They are an apex predator, top of the food chain baby!
5. They look awesome when built in bricks, like this one by timofey_tkachev.