Dubbed “Deep Blue”, this is reputedly the biggest great white shark ever filmed. Not necessarily the biggest great white. On the subject of size, Wikepedia says: “... mature individuals growing up to 6.4 m (21 ft) in length ...”1
Not the biggest shark — the whale shark can be around twice the length of the great white. “The largest confirmed individual had a length of 12.65 m (41.50 ft) & a weight of approximately 21.5 metric tons (47,000 lb) …”2
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1 “Great white shark”, https://en.wikipedia.org/wiki/Great_white_shark
2 “Whale shark”, https://en.wikipedia.org/wiki/Whale_shark / Carcharodon carcharias Rhincodon typus filter feeder carnivore carnivorous /