Cetaceans cover an impressive range of performance: from the Dall’s porpoise sprinting at 55 km/h to blue whales covering 4,000 km on migration. This comparator presents documented maximum speeds, cruising speeds and daily distances for 20 species. Sources: NOAA, biologging studies, peer-reviewed papers.
Swimming is tied to physiology: explore diving physiology, hydrodynamics (the Strouhal number), diving records and the energy consumed.
Swimming performance is now measured precisely with Argos satellite tags and accelerometer sensors. The common minke whale and the fin whale hold ~30 km/h when cruising; the killer whale reaches 48 km/h in a sprint (Williams 1999); the false killer whale, ~29 km/h.
Endurance is as impressive as speed: the grey whale swims continuously at ~140 km/day during its migrations between the Bering Sea and Baja California. Over a sprint it is the common dolphin that stands out, at ~60 km/h over a short distance, surfing bow waves. These figures set the pursuit limits for whale-watching boats and the threshold beyond which behavioural disturbance becomes measurable.
