Today HT faces his biggest fear. Orcinus Orca AKA Killer Whales. We'll talk about their hunting strategies, their big brain, and weird behaviors they've been seen doing recently. 

Resources: 

Relationship of humpbacks and killer whales 

Secret culture of killer whales

Genetic evidence of killer whales killing great whites

On wildlife - Killer whales

How smart are killer whales?

Killer whales sinking boats

Weird new behaviors

Killer Whales wearing salmon hats.