Pilot Whales | The Creature That Scares Killer Whales

If I told you to imagine the apex predator of the ocean, every one of you is probably picturing the killer whale. They hunt seals, drown whales, and even kill great white sharks. The orca is, by every biological definition, an apex predator. Nothing hunts them, nothing even challenges them. At least, that's what we're told. But what if I told you that the killer whale itself has something it's afraid of? Not long ago, scientists over in Iceland caught sight of a gang of orcas having a joyful time cruising and communicating away without a worry. Suddenly, the entire pod stops. They drop their food, they stop their communication, and then they ran away at full speed. They were reacting the exact same way a seal reacts when it sees an orca. The thing they were running from wasn't a massive shark or prehistoric monster. In fact, compared to a bull orca, the animals chasing them are pilot whales. So what does a pilot whale actually do to an orca that makes it panic? Why does the most feared predator on the planet consistently choose to run? Pilot whale are the second largest oceanic dolphins after killer whales. They look a bit more dorky. They have these blunt, round heads, often called melons, and they lack the sick black and white wall paint that makes orcas look so intimidating. The orca is a predator designed to kill, well, basically anything it wants to. And the pilot whale is designed to eat mid-sized squid, not even giant squid, just like these guys. On paper, this matchup should not even be a contest. But there is more to the pilot whale than its appearance suggests. Known as the cheetahs of the deep, these enigmatic creatures have perfected an offbeat hunting technique. During their pursuit, they swiftly plunge with a torpedo-like motion, revving up to a blazing 20 miles per hour and maintaining this breakneck pace for a staggering 650 feet. Their lungs are designed to collapse safely under pressure, and their muscles are packed with myoglobin to store oxygen for these intense maneuvers. They look like blobs, but they are unbelievably agile blobs. But even being fast doesn't necessarily make you a threat to a 30-foot apex predator. Unless, of course, you aren't alone. Orcas hunt in pods. Eight is common. Twenty is usually on the high end. Pilot whales have entire clans. These can number into the hundreds. When pilot whales hear the calls of orcas, they don't do what every other whale does, which is to hide. They actually move towards the sound. They seek out the orcas. Scientists call this attraction to predator calls, which sounds like a suicide mission, but it's actually a brilliant defense. Instead of being hunted, they become the hunters. They form a wall of meat, muscle, and blubber, a phalanx that aggressively charges the orcas. Imagine a dozen orcas trying to maintain their hunting position when 50 or 60 angry high-speed pilot whales are slamming into them, flanking them, and screaming at them from every direction. And the strangest part, despite all this, these two species rarely actually ever touch each other. No one is being bitten to death. There is no blood in the water. The fight is over before it even begins, because the pilot whales are blinding them. Sound is an orca's everything. Its echolocation and sonar are so precise, it can detect a salmon from the size of its swim bladder hundreds of feet away. And when a hundred pilot whales come in and start yapping as loud as they possibly can, orcas suddenly can't even hear each other. There is a leading hypothesis that the pilot whales engage in acoustic jamming. By mimicking orcas' calls and overlaying them with their own complex vocalizations, they effectively blind the orca's sonar. But if an orca is physically stronger, why doesn't it just stand its ground and fight through the noise? In the world of predators, there is something called the apex predator paradox. When you're at the top of the food chain, you actually have the most to lose from a fight. A broken jaw, a torn dorsal fin, or a deep muscle bruise from a five-ton pilot whale ramming into its side at 20 miles per hour means the orca can't hunt. If it can't hunt, it can't eat. If it can't eat, the pod might leave it behind to maintain their own survival. Evolution has made orcas incredibly smart, and part of being smart is doing the math. Why risk your life to fight a mob of crazy squid hunters when you can just swim 10 miles away and find some seals who aren't looking to pick a fight? The most dangerous person is someone with nothing to lose. Because of this logical biological math, the fear is real. If you were to look at a satellite map of where orcas spend their time in the North Atlantic, you'd start to see some black holes. These are regions which are specifically pilot whale hotspots that the orcas simply refuse to enter. It's what scientists call a cartography of fear. When the orcas are forced to move, the herring, salmon, and seals in those pilot whale zones are suddenly safe. The presence of pilot whales creates a sanctuary for smaller animals simply by being too annoying for the apex predators to handle. Meanwhile, some orca pods have started to change their vocalizations to be silent when entering pilot whale territory. They are experimenting with stealth mode, trying to pick off prey and move through the area before the local pilot whale mob can realize they're even there. As the Arctic ice melts and the herring move further north, the ranges of the orca and the pilot whales are beginning to overlap more frequently. When resources become scarce, conflict avoidance eventually gives way to desperation. Scientists are wondering, will there be a breaking point? Fear dictates the movement of even the strongest animals on Earth. The most powerful predator in the history of the world is effectively a nomad, constantly moving to avoid confrontation with a smaller, louder, and well, mentally insane cousin. At the end of the day, apex predator is just a human label. We love to put things in a pyramid. We like to think there is always one person or one animal on top. But the relationship between the orca and the pilot whale shows it's a bit deeper than that. You can be the king of the food chain, but weirder, crazier animals can still piss you off. The ocean does not operate by our definitions, and perhaps that is the most important thing it has ever taught us.