Someone has already been injured on Port Erin pier say police.
Police are appealing to parents not to let youngsters jump from the pier in Pier Erin.
It comes temperatures soar and beach visitor numbers surge.
But police say jumping into harbours is dangerous, there's already been one injury.
New remote doctor service launched
Army parachute team to drop into Douglas tonight
Harbour alarm to be tested today
Footpaths sealed off, awaiting bomb disposal team
Town set for two-day music event
McGuinness’s TT Fireblade replica is strictly limited
Road closures announced for Peel's Viking boat races
More information submitted on statue lighting over bat concerns