Shark patrols are ON!

Daily shark patrols have started off South Australia's metropolitan coast.

The state government will fund the $312,000 required for the shark patrols, which follow fatal shark attacks in 2004 and 2005 off suburban Adelaide beaches.

The government-funded weekday patrols started on Monday, reinforcing weekend patrols by Surf Life Saving SA.

In 2005, a marine biologist was killed by a shark while diving for cuttlefish off Glenelg beach, a year after an 18-year-old surfer was killed when attacked by a great white shark off Adelaide's West Beach.