In this video Dr Rob Brander from The Universtity of NSW explains tides, the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth.

This short video is helpful for those seeing things on their skin and helps identify moles from melanomas

The following video is to help you stay safe on beaches. It has been designed by Professional Lifeguards to educate beach goers on the most common issues they see and how to avoid them. Stay safe in the water, get the right equipment, know the hazards, know what to look for, know what to do if you or someone else is in difficulty and respect the environment, others and yourself.

Dr Rob Brander of the University of New South Wales explains how to identify a rip current.

Surf lifesaver Andy Cross explains how you can survive being caught in a rip.

Rips are complex, can quickly change shape and location and at times, are difficult to see. The things to look for are deeper, dark-coloured water, fewer breaking waves, a rippled surface surrounded by smooth waters and anything floating out to sea or foamy, discoloured, sandy, water flowing out beyond the waves. Rips don't always show all of these signs at once.

Rip currents are by far the greatest hazard to beach swimmers. This national award-winning video shows what rip currents are, how to spot and avoid rips, what to do if you get stuck in a rip.

This video shows how to identify rips and what to do if you are caught in one, or see someone caught in one. Produced in the USA, the knowledge in this video applies all over the world

A great video from SLSA on how to survive if you get caught in a rip

Learn the importance of reading beach signs and about what each flag on Australia's beaches represents. Remember, always swim between the red and yellow flags.