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their is not water under the sand on a beach. If there was the beach would collapse.
Inflatable is generally made of high strength, fire and water proof PVC tarpaulin. There are Giant Inflatables,Inflatable Bouncers,Inflatable Castles,Inflatable Combos,Inflatable Obstacles,Inflatable Slides,Inflatable Sports,Inflatable Tents,Inflatable Water Games,Promotional Inflatables. Most of them are used in playgrounds, gardens, water world and home or advertising use.
No, non inflatable water trampolines do not exist. Water trampolines need the air for buoyancy.
Someone can find inflatable water slides for the summer time for sale from a number of companies such as Amazon. Amazon has a large selection of inflatable water slides for sale.
Most inflatable water slide toys are made of polyvinyl chloride (PVC). There are other materials that are used to make inflatable water slide toys as well.
Because cars don't work under water. Also I like the beach.
Upthrust
The word "inflatable" is an adjective. It describes an object that is designed to be filled with air or gas in order to make it larger or more buoyant.
Beach Huts are small shed like structures, sometimes single and sometimes build as a terrace used for changing into beach wear and also for sheltering from bad weather. They can also be used to store deckchairs and items for use on the beach such as inflatable dinghy's buckets and spades etc. Some beach huts have the facilities to boil water for making tea or coffee.
It would simply float back to the surface!
buoyancy
Upthrust