What is the hardest dive in diving?

According to the Official FINA Dive Tariff sheet, the hardest dive in terms of degree of difficulty, is a reverse 4 and a half somersault piked from the 3 metre board (309B), with a degree of difficulty of 4.8.

However, the hardest dive commonly seen in Olympic Diving is the Inward 4 and a half somersault tucked from the 10 metre platform (409C), with a degree of difficulty of 4.1. This dive was performed by the Mexican Synchronised duo, Iván García and Germán Sánchez, in the London 2012 Olympics, earning them the silver medal.

Iván García and Germán Sánchez

Iván García and Germán Sánchez Iván García and Germán Sánchez Iván García and Germán Sánchez