What is a really interesting fact about a killer whales body?

Killer whales, or orcas, have a unique layer of blubber that can be up to 12 inches thick, providing insulation in cold ocean waters and buoyancy while swimming. Additionally, their large dorsal fins, which can reach up to 6 feet tall in males, help with stability and may also play a role in social signaling among pods. Their bodies are perfectly adapted for their role as apex predators, with powerful muscles and streamlined shapes that allow them to swim at speeds of up to 34 miles per hour.