By the time a wave reaches shore, it may have travelled tens of thousands of kilometres.
Ian Mitchinson / Shutterstock
There's much more to waves than the part you see at the beach.
Watch out, currents about.
It's good to know how currents are formed in the ocean, as they can be quite dangerous!
Dooagh beach, Ireland.
A entire beach in Ireland has returned 33 years after being washed away.
Bathers on Perranporth beach in Cornwall stay in the safe area marked by lifeguards, with large rip currents visible to either side.
Knowing how rip currents form and how to spot them could save your life.
When you’re at the beach this summer be aware of the dangers of the rip.
On average 21 people drown each year in rip currents on Australian surf beaches. This value exceeds the long-term annual average of fatalities caused by bush fires, floods, cyclones and sharks combined…