Killer whales are actually the largest species of dolphin. Their dorsal fin can be used to recognise individuals, and in males can measure an incredible 1.8 metres in height. Killer whales are found in every ocean on the planet, and as well as being the most widely distributed, they are also one of the fastest sea mammals, reaching speeds of up to 55kph. As distinguished marine predators, these strikingly marked killers employ a number of clever techniques to catch their prey. These include herding, coordinated attacks and wave washing seals off ice floes.

Did you know?
Killer whales have been known to hunt down grey and blue whales.

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