Lifeguards have put out a safety reminder after The Argus published two people tombstoning off of the helter skelter.

The two men leapt off from the top of the building on Sunday afternoon. The jumpers said they had calculated their jump before taking the plunge.

The Royal National Lifeboat Institution (RNLI) has issued its concern after seeing the jump and has warned residents these activities could lead to lifechanging consequences.

A spokesman said: “The RNLI view on this is that tombstoning is a high-risk activity, which involves jumping or diving from a height into water.

“It can be dangerous because water depth alters with the tide – the water may be shallower than it seems, submerged objects like rocks may not be visible and can cause serious injury if you jump onto them.

“The shock of cold water may also make it difficult to swim and strong currents can rapidly sweep people away.

"The jumpers quoted in the paper say they have calculated the risks, but the fear is that their actions may be copied by others who don’t.”

For those who do participate in tombstoning, the following advice can reduce the risks:

  • Check for hazards in the water. Rocks or submerged objects under the sea may not be visible through the surface
  • Check the depth of the water. Remember tides can rise or fall very quickly – it may start off deep enough but can quickly become shallower
  • As a rule of thumb, a jump of 10 metres requires a depth of at least five metres
  • Never jump while under the influence of alcohol, drugs or peer pressure
  • Consider the risk to others. Conditions can change rapidly so remember young people could be watching and attempt to mimic the activity
  • Check for access, it may be impossible to get out of the water.