RIYADH: Five King Abdulaziz University students have built a float that uses a simple, low-cost mechanism to sink and rise through the sea on its own, recording depth, pressure and temperature. The five are Bandar Khalid Al-Zahrani, Youssef Al-Otaibi, Abdulsalam Al-Faifi, Ziyad Al-Shamrani and Ali Al-Saiari. They spent six to seven months taking the project from an idea through planning and early design to the finished float. Al-Zahrani, a 24-year-old mechanical engineering student at the univer
