Amr Ahmed Mohamed Al Sherif، a student at Sports Education Faculty of Beni Sueif University، has invented a system enables the blinds to dive safely under water. That system quotes technology of the bat which emits ultra sonic wave that hit objects then return to the flying mammal. Al Shreif calls that system the swimmer-bat. A blind could dive safely by using an app resembles the wireless mobile phone. He revealed that President Abdel Fattah Al Sisi honored him and others during the conference of Youth held the day before yesterday in Cairo University. He affirmed that the president encouraged him. He –the president – promised to provide all resources to the youth inventors.