In perfect playing conditions the Falcons put through 24.8 (152) to the Sharks’ 21.3 (129), firming their hold on second spot on the premiership table.
Not even eight goals to West Coast forward Brad Dick could halt the rampaging visitors.
The Sharks had skipped out to a 20-point lead early in the first term but the Falcons soon got the balance in their favour by scoring with their first foray into their forward 50.
The second term was another arm-wrestle with the lead changing hands a number of times.
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An eight-goal third-term gave the Falcons a five-goal lead heading into the final term.
After a mini Sharks revival West Perth regrouped, with Josh Mellington and Andrew Strijk booting steadying goals. Anthony Tsalikis (five goals) and Marc Crisp (four goals) starred for the Falcons.