A bull shark, thought to be the culprit, dramatically leapt into the air near a boat, captured on video in Silverwater this past Monday.

“Holy f—,” exclaimed one of the onlookers in the brief video clip.

The rowers in the footage are believed to be participants of a holiday rowing camp hosted by The King’s School.

In response, a statement clarified, “On-water sessions will be halted if conditions present a heightened risk of capsizing,” and all small boat training in the water has been suspended.

Recently, Nico Antic, aged 12, suffered a bite while swimming at Vaucluse on Sunday, and the following day, 27-year-old Andre De Ruyter was bitten at Manly.

Two others this week had lucky escapes from major injuries when sharks bit their board.

Experts say the deluge of recent rain has lured bull sharks in closer to shore, and in some cases up Sydney rivers.

Bull sharks are unusually tolerant of brackish water – salt mixed with fresh – and are drawn to animals flushed out of rivers by floods.

Additionally, the murky water makes it difficult to see them get close.