Shark
The shortfin mako shark achieves burst velocities exceeding 74 kilometres per hour, making it the fastest shark species documented. The great white shark, whilst marginally slower, can accelerate from near-stationary to full attack velocity in under two seconds. This represents millions of years of hydrodynamic refinement, each fin placement and dermal denticle orientation optimised for explosive acceleration through one of the most resistant mediums on Earth.
Water, it bears noting, is approximately 784 times denser than air, rendering these speeds genuinely remarkable from a physics perspective.
The Internet
Data traversing fibre optic cables approaches two-thirds the speed of light, approximately 200,000 kilometres per second. A photograph of one's breakfast can circumnavigate the globe in approximately 133 milliseconds. The latency between London and Sydney, some 17,000 kilometres, measures roughly 250 milliseconds under optimal conditions.
This velocity operates at scales so far removed from biological experience that meaningful comparison becomes almost philosophically problematic. The shark's impressive burst seems rather quaint when measured against electromagnetic propagation.