Could one killer whale hunt a blue whale if it was dedicated?

Short answer: No. Orcas have a higher top speed than blue whales, but blue whales have better endurance. Blue whales prefer to flee rather than fight, so the lone orca would probably be left behind. There are exceptions, however. read more

Even if the blue whale didn't fight back, it would win the endurance race. The orca would exhaust itself, possibly to death, long before it could kill the blue whale. Very large groups of orcas have killed juvenile blue whales on rare occasions, but a lone individual has no chance, even against a juvenile, unless the blue whale was dying anyway. read more

” A few years ago group of 30 killer whales were once observed ganging up on a 60ft blue whale, though the blue whale arguable had a massive size advantage, the killer whales had tactics on their side, those tactics being elbow drops and middle finger aimed squarely at the established food-chain. read more